So I've used Vegas Movie Studio HD Platinum 11.0 for years now and it has been absolutely fine and worked perfectly up until yesterday. I haven't used it in about 2 weeks and i am now trying to import a .MP4 video into a project, however it seems to only allow footage that is less than 5 minutes, otherwise the program instantly crashes. A window called 'Problem report' pops up and asks me to send a crash report. The footage is from the screen recording software called ShadowPlay, which has worked perfectly fine in the past. If anyone could shed any light on this situation it would be very much appreciated.
I am on Windows 7, 16 GB RAM, GTX 1070 Graphics card, Intel i7 processor.