[FIXED by v9.5.40 update] Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB...

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ArsPerspicuus
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[FIXED by v9.5.40 update] Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB...

Post by ArsPerspicuus » Wed Feb 28, 2018 5:32 am

Hi again!!

A problem that I had last fall has resurfaced.

I'm running Cubase Pro 9.5.10 on a Win10 Professional x64 machine, although the exact same thing was happening in Cubase Pro 8.5.

------------------------------------------

I'm trying to build a master project template (.cpr) file containing a track for each and every instrument.

On each track, the instrument is loaded and then 'disabled' to save resources and minimize file size. I've got a *lot* of instruments, so the file has been slowly growing for some time.

What I discovered last fall before sidelining the project, and I am rediscovering today, is that Cubase is corrupting the .cpr file each time it reaches 1.99GB in size.

This is particularly insidious, because Cubase doesn't announce a problem with the file at the time of file corruption . . . it allows me to add additional instruments and incrementally save the project file every few minutes with sequential filenames.

------------------------------------------

Only later, after I've closed the .cpr file and then try to re-open it, do I get the following weird error message:
Project “filename.cpr” was created with Cubase 1.x. This program version cannot load it.
The Project was, of course, created in Cubase Pro v9.5.10, moments ago..........................

In each instance, the corrupted files are always the exact same size: 4,194,305 KB, which shows up as "4.00GB" in Windows Explorer.

Sometimes I'll have to go back three or four iterations of the .cpr file before I'll find one that will open. Looking in Windows Explorer, I'll see that the last several iterations of the file are all exactly 4,194,305 KB, even though Cubase allowed me to add more instruments and re-save each sequential version. It's not until I CLOSED THE FILE that Cubase rendered it un-reopenable.

The 'last good version' of the file always shows up in WIndows Explorer as 1.99GB, though the file size varies slightly (2,096,988 KB... 2,095,426 KB... etc.). It seems that the minute I try to add the instrument track that pushes the .cpr file size over 2GB, Cubase doubles the file size to 4.00GB, and otherwise renders the file corrupted and un-reopenable-once-closed (this is also true to .bak files)...... all without ever letting me know that there's a problem.

------------------------------------------

Why does Cubase choke each and every time that one of my .cpr files hit 1.99GB?

I couldn't find any reference to a maximum .cpr file size. Is there one? Are there folks on this Forum working with larger .cpr files?

I'm running Win10 Professional x64, with 16GB of installed memory. Physical memory isn't the issue — could it be a Windows virtual memory allocation issue?

Why does Cubase mysteriously double the newly-corrupted .cpr file size, always to exactly 4,194,305 KB and maintain that file size through subsequent iterations, even as it lets me add more material to the template?

On a related point, why does Cubase allow me to keep adding more material to the file after it had already doubled the size to 4GB, so that I don't notice a problem until the end of the work session when I close the project . . . and then, some time later, try to re-open the .cpr file?

What in the world is going on here?!?!?
Last edited by ArsPerspicuus on Tue Nov 13, 2018 8:36 am, edited 1 time in total.

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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by planarchist » Wed Feb 28, 2018 10:38 am

I don't know about Cubase specifically but during saving files are sometimes much larger than their final size, thus possibly the 4Gb files. I assume this isn't then being compounded by your drive formatting? You are using NTFS drives I assume and not FAT32?
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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by ArsPerspicuus » Wed Feb 28, 2018 4:32 pm

Hi, planarchist.

That wouldn't be the issue here.

The drives are all NTFS.

The .cpr file has grown, slowly, over a very long time. Each additional instrument track adds a few KB to the file size. Each subsequent iteration of the .cpr file is a few MB larger than the previous.

Everything proceeded as expected from when the .cpr was only a few KB in size until it approached 2GB.

-------------------------------------------

You can see the last two day's worth of work (out of several months) in this screenshot from Windows Explorer:
The .cpr file was at 1,756,464KB on Feb. 25, and grew by a few MB with each successive iteration.

The last 'good' (i.e., open-able) iteration of the .cpr file is 2,085,697KB (or, as Windows Explorer would display if it were highlighted, '1.99GB').

As you can see, I continued adding more instrument tracks, and incrementally re-saved the .cpr file three more times in the same session (those are the three highlighted files at the bottom). Each time, Cubase let me 'Save As', and offered no hint that anything was wrong. Each time, the resulting filesize remained the same, even though I had added further instrument tracks.

Later, I tried opening the last version, and got the weird "Project “2018.02.27 - 10 - adding tracks.cpr” was created with Cubase 1.x. This program version cannot load it" message. Got the same error message on the previous two versions.

-------------------------------------------

I've got 16GB of installed RAM, and I'm running on a 64-bit Win10 system.

This is definitely an issue with the way Cubase handles .cpr files as they pass 2GB in size.

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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by -steve- » Wed Feb 28, 2018 5:09 pm

See this: viewtopic.php?f=253&t=131785&p=714578

Not exactly the same but has the corruption at 4gb.
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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by planarchist » Wed Feb 28, 2018 6:31 pm

...ah, yes, thought it sounded familiar...does sound like the same kind of problem.
Nic

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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by ArsPerspicuus » Wed Feb 28, 2018 6:50 pm

Thank you -steve- for letting me know that at least it isn't just me having this problem!!!!!

I'm surprised that @Martin.Jirsak was able to open a 4.29GB .cpr file, since I've never been able to get a .cpr file to cross the 2GB threshhold without running into that crazy "created with Cubase 1.x" error message.

Martin, please get in touch with me — I can provide the devs with TONS of pre- and post-corrupted .cpr files (and screenshots and possibly-related crash dump files), created in both Cubase Pro v8.5 and 9.5.. I'll do whatever I can to help Steinberg fix this problem!!!

If the devs thought that it would help, and if I knew that they'd actually review it, I'd open my largest 'good' file, and run procmon while adding enough instruments to push the .cpr file across the 2GB threshhold. Perhaps they could see what Cubase does at that point, when I re-save the file, when I close the file, and when I try to re-open the file.

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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by Martin.Jirsak » Thu Mar 01, 2018 11:25 am

Hi ArsPerspicuus,

Thank you very much. The projects would be highly appreciated! Could you put them to a Dropbox folder, and send me the link via Private Message, please?

Btw, I couldn't open the 4.29GB .cpr file, as I wrote in the linked thread:
Last file size (when I cannot open it anymore) is 4.29GB
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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by PeppaPig » Sat Mar 03, 2018 7:34 pm

Obviously going over 2Gb you're crossing a bit boundary (31 to 32) I'm sure this isn't a co-incidence - sounds like a programming error ie a 32bit signed field overflowing (one bit used to mean negative or positive value) then moved to a 32bit field as binary 11111111111111111111111111111111 = 4Gb.
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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by ygrabit » Wed Mar 07, 2018 4:33 pm

Thanks for posting the files...i have found the problem...will be fixed in a next update
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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by ArsPerspicuus » Fri Mar 09, 2018 7:58 am

HOORAY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Will it be a simple or difficult fix?

Any idea how soon the fix will be ready for public enjoyment? You see, I've got these two massive template files that really need to be combined in order for my fantasy future workflow to become reality, and . . . . . :-)

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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by Darrenaudioguy » Sun Apr 22, 2018 8:49 am

Hi folks.

I am having the same problem. Its really holding back my template development.

9.5 Pro on Windows 10 64bit

When will the fix be available, could we get a build to patch the problem please?

Many thanks

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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by Martin.Jirsak » Sun Apr 22, 2018 11:00 am

Hi,

It should be fixed with the next update release.
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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by Darrenaudioguy » Sun Apr 22, 2018 1:04 pm

Do you expect those 4gb cpr files to be in some way recoverable?

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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by Darrenaudioguy » Fri Apr 27, 2018 8:03 am

Do we have an ETA on the next update please? This issue is killing us here.

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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by Martin.Jirsak » Thu May 24, 2018 2:24 pm

Hi,

Could you try with Cubase 9.5.30, please? It should be fixed for a files in range 2 - 4 GB. Files bigger then 4 GB are not fixed, as far as I know.
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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by ArsPerspicuus » Mon Jul 09, 2018 3:59 am

Martin.Jirsak wrote:
Thu May 24, 2018 2:24 pm
Could you try with Cubase 9.5.30, please? It should be fixed for a files in range 2 - 4 GB. Files bigger then 4 GB are not fixed, as far as I know.
I looked through the 9.5.30 release notes when it came out, and saw no mention of it in there.

Then I installed 9.5.30 and, unfortunately, the problem has not been fixed....... at least for me.

Although I now get a different error message than I had previously gotten, I still have the problem every time I take an existing (and functional) 1.99GB file and add instrument tracks to it until it crosses the 2GB line . . . at which point it crashes or causes a 'serious error' in Cubase.

If a fix was actually rolled out, and if some folks can now build project files that are larger than 2GB, the immediate question becomes whether brand new project files can now go as high as 3.99GB, but pre-'fix' files have something 'baked into' their structure, so that they will always cause problems at the 2GB mark, even post-'fix', and will have to be re-built, from scratch...???


@Martin.Jirsak and @ygrabit, please check your Inboxes, there is a PM with some additional info and downloadable data waiting for you.......... :-)

Thanks!!

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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by Martin.Jirsak » Mon Jul 09, 2018 6:33 am

PM replied.
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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by drhardlove » Tue Aug 21, 2018 2:17 pm

ygrabit wrote:
Wed Mar 07, 2018 4:33 pm
Thanks for posting the files...i have found the problem...will be fixed in a next update
Thanks. BUT I just had the problem here today, for the first time ever.
New 9,5 Pro with latest update 9.5.30.
Mac OS 10.9
What happened with the fix? What can I do?

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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by ygrabit » Fri Nov 02, 2018 3:21 pm

Hi
the 9.5.40 or 9.5.41 should fix this kind of issue...
Cheers
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Re: Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB and rendering them unreopena

Post by drhardlove » Sat Nov 03, 2018 12:44 pm

ygrabit wrote:
Fri Nov 02, 2018 3:21 pm
Hi
the 9.5.40 or 9.5.41 should fix this kind of issue...
Cheers
Thanks for delving in, and the feedback.
Not bad at all. Well done. 😁👍

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Re: [FIXED by v9.5.40 update] Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB...

Post by ArsPerspicuus » Tue Nov 13, 2018 9:06 am


The v9.5.40 update got me over the 1.99GB threshold!!!


[fireworks, confetti, orchestral fanfare, &c.]

I'm very grateful to the folks on this forum and on the dev team who worked directly on the code and/or made sure that the issue was at least brought to the attention of the right people.

There's been a lot of grousing about the v9.5.40/41 updates, not to mention Steinberg's responsiveness to users in general, so I just want to highlight this instance where a specific problem was brought to Steinberg's attention, questions were asked, data was supplied, and the problem got fixed pretty damn quickly.

I can only assume that this was an easier issue to resolve than the publicly-acknowledged and 'still-under-construction' ones . . . but it's still an amazing feeling when one's own insurmountable workflow-destroying malfunction in a critically important program turns out to be (relatively) easily fixable . . . and then actually gets fixed, in relatively short order, by a helpful and attentive dev team.

Speaking of which . . . er, of whom . . . the dev team doesn't get nearly enough love and appreciation for the work that they do constantly maintaining/creating/repairing a mind-bogglingly-complex body of code. THANKS AGAIN FROM MEEEEEEEEEEEEE FOR THIIIIIIIIIIIIS!!!

- - - - - - - - -

NEXT ORDER OF BUSINESS: so, uh . . . what can be done about that 3.98GB threshold . . . :mrgreen:

It looks like my template .cpr, if built to its full desired size, would probably run somewhere between 6GB and 8GB......... :cry:

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Re: [FIXED by v9.5.40 update] Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB...

Post by polygraph » Sun Mar 10, 2019 12:46 pm

Unfortunately not fixed for me.
I have the same issue. Downloaded trial of Cubase 10 pro, but when i open template project that was corrupted i see a blank page.
5 gigs loaded in RAM, and if i press F3 i can see the mixer from template project but there is no main template window with all tracks and i don't know if there is any hotkey to open it....
Can somebody help me with this issue?
Last edited by polygraph on Mon Mar 11, 2019 11:39 am, edited 1 time in total.

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Re: [FIXED by v9.5.40 update] Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB...

Post by Martin.Jirsak » Mon Mar 11, 2019 11:10 am

Hi and welcome,

Already corrupted project/template can't be fixed. But a new project will not become corrupted this way anymore.
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Re: [FIXED by v9.5.40 update] Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB...

Post by polygraph » Mon Mar 11, 2019 12:35 pm

Martin.Jirsak wrote:
Mon Mar 11, 2019 11:10 am
Hi and welcome,

Already corrupted project/template can't be fixed. But a new project will not become corrupted this way anymore.
Thanks) now i understand.

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Re: [FIXED by v9.5.40 update] Cubase corrupts .cpr files that reach 1.99GB by blowing them up to exactly 4,194,305 KB...

Post by polygraph » Sun Jul 14, 2019 10:00 pm

Martin.Jirsak wrote:
Mon Mar 11, 2019 11:10 am
Hi and welcome,

Already corrupted project/template can't be fixed. But a new project will not become corrupted this way anymore.
hmmm... It's interesting but I need to raise this thread again.
Cubase 10.0.30 corrupts my *.cpr template file after saving when it's size become 4GB+
Cubase says: "Invalid Project File"

Why Steinberg still can't solve this problem with maximum file size?
does somebody have the same issues with big template files?
I can't wait until Steinberg will fix this issue in 10.5 version. I need to build my template now

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