This is an issue I've been having recently with a new project of mine in Flash. I think the filesize may be a bit too large to open with the current version of flash I'm using (I'm still using Flash 8 and the filesize is 262mb) yet when I tried opening the .fla file in Adobe Flash CS5, I had no issues with it loading up and I was able to work in the .fla file nicely unlike when trying to use it on Flash 8 where the image wouldn't load up and I wound suffer from a laggy program that crashed (yet I have not had issues with flash 8 previously like this).
I need to know this just in case if I should upgrade: is it generally easier for larger filesizes to be opened in more recent versions of Flash like CS5 than it is for them to be opened in Flash 8?
Sorry if this is a dumb question and I appreciate the help.