Every time I deploy my GWT app to appengine and try to access it I get the white loading screen, then after about 20-
Just for information, I had the same problem, caused by the usage of a non-standard project structure.
Maven was copying the .nocache
files in a directory different than /target/
which prevented the clean
plugin from cleaning the generated files.
Adding a new with the directory where the files are copied solves the problem.