This happened already a couple of times, when i'm using a flash file and i'm drawing, the tools will start to malfunction and I can't close down Flash all of a sudden, then when I close it with Task Manager and open it again, the flash file will be blank and whenever I click anything on the platform, "an invalid argument was encountered" - Here's a screenshot of what i'm talking about:
anyway, i'd like to know how to fix it because I couldn't find answers for it anywhere. Sorry if i'm not describing this well, i'm not too good with computers