Common ActionScript 3 Errors and Explanations

So as with the new version of ActionScript there is a new level of complexity when it comes to creating ActionScript, but there seems to be better debugging too. The only barrier I have hit is the language sometimes just doesnt make sense, so I usually Google the errors and find great explanations.

This is just an ongoing list I will compile to help fellow AS3 developers to make sense of what the errors mean.

• Error #1046: Type was not found or was not a compile-time constant:
  Curtis Morley has come up with a great explanation as to what this actually means, you can read about it here.
• Error #1502: A script has executed for longer than the default timeout period of 15 seconds. Curtis Morley has also come up with another great explanation as to what this actually means, you can read about it here.
• TypeError: Error #1009: Cannot access a property or method of a null object reference.Curtis Morley has also come up with another great explanation as to what this actually means, you can read about it here.