There is no list of such errors, because any general error can mean a lot of things. For Error 41, here's a grab:
- You have just installed or re-installed FCP and you have not downloaded the latest updates for your version.
- You are trying to open a project that was created on a newer version of FCP.
- You are trying to use the same copy of FCP on two different machines at the same time.
- You have corrupted files in your project - try starting FCP with your media drive disconnected.
- You have one or more corrupted preferences - trash the FCP prefs and try again.
- You have a corrupted project file - can you open other project files ?
Try these for a start and get back here if it still does not work.
Best wishes,
Ronny