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148

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Q: 

Google App Engine: NoClassDefFoundError on run

Everytime I try to run my project, I get the following error message:

Exception in thread "main" java.lang.NoClassDefFoundError: com/google/appengine/tools/util/Logging at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:82)

What could be the problem? I've tried reinstalling Eclipse and reconfiguring the Build Path for a couple of times now, but no avail.

Thanks!

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