I tried the latest build and it works fine.
Based on the exception you are seeing, it looks like an installation / configuration issue.
I would suggest trying the following from the Designer FAQ
1) Make sure that your Designer > GWT > Path
preference points to your GWT installation directory.
2) Make sure that your project's .classpath file includes the following entry (and no other references to gwt-user.jar
<classpathentry kind="var" path="GWT_HOME/gwt-user.jar"/>
3) Make sure that gwt-user.jar
appears before gwt-servelt.jar
or any other Google-supplied GWT jar (gwt-servlet.jar
in particular includes many overlapping classes with gwt-user.jar
, so it is important that gwt-user.jar
is listed first).
4) Try deleting the following directory in case there is a problem with cached GWT bytecodes...
5) Make sure that anything that might interfere with local communications is disabled (like any proxy configured in your IE settings or any overly aggressive anti-virus software). If you have a proxy server configured in your IE LAN Settings
, make sure that the Bypass proxy server for local addresses
option is enabled. As a test, you can also try disabling the proxy completely.
6) Re-boot your PC and try it again. This should rule out any temporary problems with memory, communications, etc.
7) Re-install Designer (using the latest build
) into a clean Eclipse environment (new workspace). This should rule out any installation problems or issues with other plugins.
8) Do a full reset of you browser settings (see your IE preferences). This is to rule out any unknown IE-related configuration issues.