you should give some example code, so we can analyse.
sometimes, if you compile module optimize for application A, then you load this module in Application B, will happen some like this problem
Thanks for the reply, i used -link-report to see whether this css gif compile to the swf, and i found that the xml has no this gif.
Finally, i found that if i change compile parameter "incremental" to false, the -link-report xml has the css defined looks like "<script name="_class_embed_css_edit_gif__816087204_2003192454.as"", and the flash will work well.
I don't know the real reason why "incremental" will impact the css? This issue only exists in sdk 4.5 later version, it is OK in sdk3.5 version. Why?
Every release tries to speed up compilation by making "improvements" to incremental compilation, which tries to minimize the number of things that need to be re-compiled. Looks like there may have been an issue with 4.5's compiler.