Logic File Corruption

I wanted to share my experience with other people that might be looking for an explanation for file corruption under Logic.
For many months I was experiencing frequent file corruption under Logic Pro and I could'nt find what was causing it.... until now.
FYI, unfortunately I still haven't found a way to fix the corrupted files. As far as I know, they're doomed.
I would work on a song for a few hours, withouth any glitch, then close the file.
When I would open the file again and start playing it, all my audio would go crazy (loud sounds and noise blasting through my headphones).
The file was doomed, corrupted and no way to fix it. I would have to start from an older backup and loose all recent changes.
Did lots of research on the web withouth success. I thought the culprit might be some of the virtual instrument I was using, including a new one I installed recently called, "Myroslav Philarmonic".
It was not.
I finally realized I had "Time Machine" running every couple of hours for backups, and it was corrupting any opened Logic files!!!
Lost so much time over this.
Hope it might help someone in the same situation.
Sly

Thanks Erik,
This was easy and solved it. I knew it had to be an easy solution I just overlooked. Keep up the great work!

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All was fine with our network setup running Logic 6.4.3/OS X 10.3 but Logic Pro 7/OS 10.4 has had ongoing issues from the day we installed it.
Just to clarify users aren't moving documents with large audio files around the Network - the files are typically MIDI only - not even using virtual instruments.
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i ran into a problem with logic 6.4.3 which was not letting me edit audio files destructively, because a temporary file could not be written to the applications/logic folder - the users did not have permissions to access that part of the HD...
http://discussions.apple.com/message.jspa?messageID=3417133#3417133
your problem sounds like it is different but in some way might still be related.
i really wish logic would let you configure where the program stores it's files so you can anticipate these problems more easily!
this also applies to the library of fx presets and audio files, which under logic, soundtrack pro, garageband, cannot be put in a user definable folder... (or at least to my knowledge!) and why put them in ridiculous places like library/application support/logic/bla bla????
especially when you consider applications such as FCP let you do this easily!!!
<sigh> end of rant
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so far i have not experienced this problem with logic 7 in a similar setup to yours.
Xserve and G5 workstations running OSX 10.4.7 / 4.8
the only difference i can think of is that our setup as a system drive (1st HD) with OSX and all the apps, and a temp drive (2nd HD) where students can save their work...
are you attempting to save the files directly to a network server? if so that might be the cause of the problem... if possible, try to "save as" files locally, then move the files to the server. It may not be an elegant solution, but it will confirm that it is a network issue rather than a logic issue...
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j

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Message was edited by:
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Post in Microsoft's Powerpoint (Mac) message boards.

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