Fla file terminating flash8 program

Hi, Rescently I am encountring a problem and that is when I added some new graphic files(128Kb gif) to my application, and made a mc of that it compiled well .
when I closed all the program FLASH8 and tried reloading this fla file it terminated my application FLASH8 program ,
moreover when I tried selecting this loaded file (in a new project ) into the library the mere click of a button terminated my application can anyone help me wnow whats going on?

Thanks
Raka