Cannot have repeated interface 'identifier'
The compiler detected an interface name being repeated within a class declaration. This error is usually caused when a class implements a large number of interfaces and one of the interfaces has a duplicate entry in the implements list. Ensure that you do not have a duplicate interface entry and compile again.
The following example illustrates this error:
interface SimpleI {
// do something meaningful
}
class Simple implements SimpleI,IColor,IFont, SimpleI {
// error: 'SimpleI' repeated
}