Invalide number external.gwtOnLoad()

Depuis que j'ai changer le GWT a la version 2.2.0, j'ai l'erreur suivante:

Code:

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Connection received from 127.0.0.1:54512 [ERROR] Invalid version number "2.0" passed to external.gwtOnLoad(), expected "2.1"; your development mode bootstrap file may be out of date; if you are using -noserver try recompiling and redeploying your app; if you just switched to a different version of GWT, try clearing your browser cache

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je ne sais pas comment changer ce number..!!??