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Thanks for the reply!

I added the directory, "C:\MyRobots\build\classes\zjk", to development options. In that directory is only the class file, "drag0.class"

Okay, since you mentioned properties file, I looked around (I don't see any ${robot.name}.properties file). I tried adding the other directories above the one mentioned above and it still doesn't work. how is a .properties file generated and what is its purpose?