CS3 fla won't compile in Flash CS4

Hey everyone.

We just downloaded a demo of Flash CS4 and decided to try and recompile our game in it, so that we could try the new Hardware Acceleration mode.

However, when compiling, all we got was a 1KB file (instead of ~300KB that was the CS3 compiled EXE). Eventually we found out that the main class of the application was causing it not to compile and when we commented it, we got a much larger file, but of course no functionality. :hangover:

Do you have any suggestions on what we could do to compile our application successfully? We’ve had a similar issue when migrating a previous game from Flash 8 to 9, but then we had a very large class that we needed to break down in smaller ones. This time everything has been structured very properly and since the game has been working fine in CS3 it really boggles the mind as to what might be the reason behind the compilation issue in CS4.

Thank you in advance!