I am new to Drools (using version 4.0.7). I download eclipse workbench and am trying to run the default example in it. But I get the following error

java.lang.NoClassDefFoundError: org/drools/WorkingMemory

When I looked at the drools-core jar; It seems to be missing WorkingMemory package. What should I do?

Using eclipse version 3.4.0.

Thanks

Devyani

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