i recently updated from GWT 2.0.4 to 2.1.0. Since then I cannot compile my GWT application anymore. When I click on the GWT compile button of the GWT eclipse plugin I get th
Go to your Project Properties / Build Path
there move the "GWT library
" to the top of the BuildPath.
Now try to recompile again.
I fix that problem doing this:
I just, remove and include again gwt-dev.jar and start to work.
I had the same problem not being able to create a new GWT-project in Eclipse. Removing the Classpath variable from my windows environment variables (appearently interfering with the settings in Eclipse) solved the problem for me.
I had the same problem, some java program had been installed declaring a "ClassPath" environment variable, and invalidating the gwt plugin for ANY version of eclipse, from 3.6 (helios) to 4.2 (juno). Note that environment variables are case-insensitive in Windows OSs. Solution: eliminate the system/user variable declaration and declare the variable in a/the launch script for the concerned program.
In my case the jar (gwt-dev-2.1.0.jar) downloaded from the google maven repo was corrupt! I replace the jar in my repo with a one containing the classes and mvn gwt:run worked!
hope this helps.