Compiler Errors

from Flash Game Development: In a Social, Mobile and 3D World

1151: A conflict exists with definition xxxx in namespace internal.

You have more than one of the following statements in the same scope:

var xxxx:SomeClass;

// and/or

var xxxx:SomeClass = new SomeClass();

To remedy, change all but the first  to:

xxxx = new SomeClass();

5000: The class 'xxx' must subclass 'yyy' since it is linked to a library symbol of that type

in your class file:

add import xxx to yyy 

use private/public/etc class xxx extends yyy