GWT Compilation Error - IncompatibleClassChangeError

Question

When compiling the project, I get this obscure Exception

Looking for precompiled archives.  To disable, use -Dgwt.usearchives=false
Loading archived module: jar:         


        

Answer 1

This happened to me when I had gwt-servlet.jar on my classpath during the compilation. If using maven, mark (set the scope) the dependency of gwt-servlet.jar as provided