Well, after I edit, add transitions, etc., I save the project file, and when I reopen it... 1)every file in the Project Window is now named "-1.*" (*=avi/prtl/...) 2)the timeline has the green line wherever it has been rendered before, but in the timeline there are no tracks!And of course it doesn't play anything (sometimes it plays the beginning of the project I saved before, but again it shows nothing at the timeline and it freezed shortly after. Does anyone has any idea on how to solve it?!?I can't save a project and continue it the next day!the only way to finish it, is to work till it;s done so then I export it, but again the saved project file is unusuable