To add to Gary’s suggestion, here’s Sony’s answer:
Question:
My project file will not open, what can I do?
Answer:
Go into your Start menu and select Search or Find and Files and Folders. Then search for *.bak in this window. Look for a project file labeled with the same name with .bak after it and try to open it. If the project opens, go into the File menu and select Save As. Then save the project under a new name in a different location and continue on with that project.
If the program that you are using supports VST plug-ins, you may be able to narrow it down to a VST problem. To do so, try renaming C:\Program Files\Vstplugins to “Vstpluginsx” for example, and trying to start the program again. If it launches fine, it is a problem with one of your VST effects/instruments. At that point you may have to uninstall and reinstall your VST plug-ins or update the plug-ins from the manufacturer’s website. You may also want to try using VST-Scanner to search for a broken VST plug-in.
Uninstall the program, using the Add/Remove Programs utility in the control panel. Then go into the Program Files folder in the C drive and into the Sony and Sony Set-up folders there and delete the folders labeled with that program’s name. After doing so, re-install the update only if there is one available for your program, it will be located here. If there is not an update available there, then just install the program with the CD or install file that you originally installed the application with.
Rename the folder that the media is in for this project and then try opening the project file. Once you have the “missing media” dialog open, do not allow the program to automatically find any of the media clips from that project. Select to find the clips manually. This should allow you to locate the specific clip that causes the problem.
If the program has Media Manager included, you may want to try disabling Media Manager. To do so, first save your project and go into the Options menu and select Preferences. Then towards the bottom of the General tab, uncheck the box next to “Enable Media Manager” and press Apply and OK. Then close the program and re-open it.