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?!?!?