This application is out of date, please click the refresh button on your browser. ( Expecting version 4 from server, got 5. )

Question

Please some body help me to solve this error "This application is out of date, please click the refresh button on your browser. ( Expecting version 4 from server, got 5. )" . I am using gwt 1.5.0 .

Answer 1

Check if the gwt-servlet.jar is uptodate. The gwt-user.jar and gwt-servlet.jar must have the same version.

Answer 2

Looks like you are getting IncompatibleRemoteServiceException exception. It says, that version of RPC server interface differs from interface, which RPC client is trying to use. Typically that happens, when you are actively developing client part and server part, and for some reason you forget to restart server or refresh your GWT application in browser after some RPC interface changes.

You can get more information in GWT docs (here and here) and in exception description.