Debug « Actionscript Programming « Flash Tutorials

1. Gsbtrace - A Browser Debug Trace Window. - 13Dots Forum    13dots.com

2. 3 Tips to Help Debug Your Actionscript    sanctifiedstudios.com

1) Read and Understand Your Actionscript The best way to have a good idea of where something might be causing errors is to know your code. If you wrote all of it, you probably have a pretty solid idea of what is going on, but many people use other peoples’ code and just make small changes to it so it suits their needs. In either case, it is always a good idea to read the Actionscript so you understand how its working, what its doing and what different variables are and functions do.