Problems with publishing AS3 swf plz help!

When ever I write pure action script files without putting anything on the stage, the swf works fine when i load it from flash, but when i publish the swf it does not work the screen is just blank. No errors just blank.

I am just wondering if there are any settings that i may have changed by accident. Things have been acting sort of funky since i upgraded to leopard osx.
Or could it be something wrong with my class set up though i’m not calling any calsses.

thanks for the help :mario: