eclipse - Unable to load server class 'com.google.appengine.tools.development.gwt.AppEngineLauncher' -


i using google plugin eclipse develop website using gwt. every thing work before. today installed theme plugin eclipse , uninstall theme plugin after that. when run gwt project error

unable load server class 'com.google.appengine.tools.development.gwt.appenginelauncher' java.lang.classnotfoundexception: com.google.appengine.tools.development.gwt.appenginelauncher

i have tried reinstall google plugin eclipse , still error. how solve error ? thank help.

i have tried reinstall eclipse , google plugin. work ok.


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