Comment by kibork: Enabling this option breaks all RPC calls that do return some "complex" type(also not void or primitive).
For more information: http://code.google.com/p/google-web-toolkit/wiki/NoClassMetadataOptimization --~--~---------~--~----~------------~-------~--~----~ http://groups.google.com/group/Google-Web-Toolkit-Contributors -~----------~----~----~----~------~----~------~--~---
