Pro tools shuts down after opening certain sessions

[Ageless84]

Hello, I have pro tools M-powered 7.0 and out of nowhere about half of my old sessions immediately force quit pro tools when they are opened. The same thing happens to ALL of my new sessions. New session will record fine, even stay open to mix but if i close pro tools or open another session and try to open the first one again it shuts down Right after it's openend. The only error message is a microsoft one stating pro tools Application has encountered a problem and needs to close. The only changes i have made recently are reinstalling my mobilepre USB interface and making back ups of all sessions. Even the back ups have the same problem. I switched to the mobilepre when my projectmix i/o stopped powering up. These sessions are not only my future livelihood But six years of past work. Please help! Thank you

[caruso7r]

We will need more info on what kind of system you have to help you out. Possibly a sandra report down the line also. Are you running XP, What service pack? did you do any updates recently and what were they. Alot of info we need from you.

[Ageless84]

Sorry for not providing enough details. I Have a custom PC with an ASUS cpu. I'm Running XP Professional Service pack 3. I have not done any updates But i have installed some plug ins recently (various Antares and Native instruments). I just uninstalled those plug ins to see if that was the problem and actually i can now open most sessions but there are still a few that shut down pro tools with no error message. Any advice would be appriciated. Thank you.

[TOM@METRO]

Delete your preferences folder.

Program files>common files>digidesign>DAE>preferences<