I`ve just bought some Eurolite RGB LED Cans

With the help of DJSupport i have createt an Fixturefile.
Anything works very fine. Also with the DMX 400

But i cant but an Picture in the Macro when i create one in the Ficture Creature. I always get a red cross. The Pictures are in the Cobo directory. The Macro himself works.
Can anybody help?
Greetings Kai-Uwe