I'm using the Google Plugin for Eclipse, today i encountered a similar problem and solved it.
opened the debug-level log, if you find the following text, remove the gae library and re-add it. DEBUG [org.datanucleus.util.Log4JLogger.debug(Log4JLogger.java:58)] Class "org.eclipse.core.runtime.RegistryFactory" was not found in the CLASSPATH [Class resolver called from org.datanucleus.plugin.PluginRegistryFactory.newInstance (line=89)] DEBUG [org.datanucleus.util.Log4JLogger.debug(Log4JLogger.java:58)] Plugin Registry "org.datanucleus.plugin.EclipsePluginRegistry" not found. Falling back to DataNucleus registry. Reason : Class "org.eclipse.core.runtime.RegistryFactory" was not found in the CLASSPATH. Please check your specification and your CLASSPATH.. regards --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
