Have you checked the jdk in your project ,I got the same problem because I used the jrocket ,GWT always encounter this problem too
在 2011年2月13日星期日UTC+8下午2时43分52秒，tuco写道： > > Hi All, > As soon as I create a Google Web application project, it immediately > reports error: "Could not find the > main class: com.google.appengine.tools.enhancer.Enhance. Program will > exit". > > In Console- > java.lang.NoClassDefFoundError: com/google/appengine/tools/enhancer/ > Enhance > Caused by: java.lang.ClassNotFoundException: > com.google.appengine.tools.enhancer.Enhance > at java.net.URLClassLoader$1.run(Unknown Source) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(Unknown Source) > at java.lang.ClassLoader.loadClass(Unknown Source) > at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) > at java.lang.ClassLoader.loadClass(Unknown Source) > Exception in thread "main" > > I've downloaded latest eclipse - 3.6 and installed GAE plugin 1.4.2 > > Also, GAE library is referenced in the project. See screenshot > > http://imageupload.org/?di=1412975794035 > > I'm new to GAE, pls help. > > Thanks > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
