STRANGE problem with scenes:(

I am makeing a cartoon with Flash MX 2004. Now I have strange problem.
I got like 60 scenes but I there are certain ones I cant open. If I go on them FLASH MX 2004 is closed. And if I go on library items which are in these scenes Flash MX 2004 is closed. I dont understand why it is happening :S

Now I need to remake 3-4 scenes if I cant get them to work.

These scenes worked at start!!! And I have SWF files from them so if anyone knows how to make scenes work in Flash MX 2004 or how can i use these SWF to compleate whole movie please let me know.

THANX to all for future posts!