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Not sure myself, since I don't use CORBA or JBuilder, but the idl compiler that is shipped with the 1.4 JDK is called "idlj" and it's in the bin directory of the JDK. I think JBuilder usually ships with Visibroker, which may be why JBuilder is trying to use it for compiling idl files... see if it's installed, and see if it's in your "PATH" environment variable, or if you need to do anything to set it up in JBuilder.
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