[CS3] Works fine in Flash IDE, but recieves error once deployed on server

I realize that there could be something malformed in the code, causing this error. The error I’m receiving is an 1010, a term is undefined and has no properties. Generally I know to look for something missing from my xml file or the stage. But what confuses me about all this is the fact that the same file runs well in the IDE. Any suggestions, pointers, clues, hints, sentences that would help me solve this issue?