Comment by t.broyer: This error means Firefox tries to load the "compiled" app, i.e. the devel mode plug-in is not detected.
For more information: http://code.google.com/p/google-web-toolkit/wiki/UsingOOPHM --~--~---------~--~----~------------~-------~--~----~ http://groups.google.com/group/Google-Web-Toolkit-Contributors -~----------~----~----~----~------~----~------~--~---
