Do all projects crash? Or just the one you need to get to?
If all the projects crash, do they all have the same vst's in them?
You can do a "safe open" by holding down 'shift' when you select 'open'. Disable all the vsts. Does it crash?
1. No crash ... then one of your vsts is unstable or one vst is making another unstable. you'll have to experiment to find out what is going on with whom and when.
2. crash ...
a. Is windows up to date? Run update to make sure. Retest.
b. what is in your startup folder? disable everything. Retest
c. run msconfig, write down what is included in startup now, then disable everything, reboot. Retest
d. run scannow /verify to make sure system file integrity is OK. Scannow will run in 'look-see' mode and won't mess anything up.