External swf quick question

Im trying to load an external swf which has a class.

my opening scene which is trying to load this swf also has a class, Do i need to put the name of the external swf class within my opening scene because i keep getting an output error:-

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at spaceWars()

spaceWars being the name of document class name of the external swf im trying to load.

i do not get any compile errors though, so the code seems alright.

Hello,

Did you check to see if spaceWars() is at the correct target location? The correct target location is needed to run a program or function, otherwise it may repeatedly reproduce the error. Also, check your Action-script for the function and see if there are any internal bugs/ errors.