I compiled the JLife example sources with Forte for Java 4, but the compiled .class files won't run on the emulator. The error is this : Exception in thread "main" java.lang.NoClassDefFoundError: JLife

There were no compilation errors, and i specified the correct working path on the emulator. The command line looks like this :
pjava -cd "J:\examples\jlife" JLife
If i run the pre-compiled .class files wich come with the sdk, they run without any error. What is the problem?

I would really appreciate any help, cause i'm stuck with this for more than 2 weeks, and i can't imagine what is the problem. The .class files that i compiled are a little smaller than those that are already compiled in the SDK.