[flexcoders] TypeError: Error #1009 using modules

[Oliver Bruehl]

I'm using modules in my application and I get always the following error
message: "TypeError: Error #1009: Cannot access a property or method of a
null object reference." when the second module is loaded. The first module
works fine, but despite which is the second module it fails loading with
always the same error message. Someone had the same experience? Is there a
solution?