Phantom code on reused objects. WHERE???

"WARNING: Actions on button or MovieClip instances are not supported in ActionScript 3.0. All scripts on object instances will be ignored."

WHERE?
Movie Explorer and Find don't seem to be able to find it. I've opened every object at every level several times and can't find the code for the life of me.

I don't mind rewriting the code in pre-CS3 projects when they need updating, but I can't rebuild EVERY object in EVERY movie from scratch!

(this thread was run earlier with a few people in the same situation, and someone marked it RESOLVED-- apparently without reading it. No answers there to help.)

Anyone?

Copy and paste each object or sets of objects to a new AS3 movie and test and find which one gives you trouble.

Step through the tree view in the actions panel (lower-left window) and youll be able to see any code in your project.