GWT Compiler can't find gwt.xml

Question

I have changed and renamed my package structure of my GWT project, and when trying to run the project as a web application, the module isn't found and I get the following message:

[ERROR] Unable to find 'de/xx/focus/My_Projekt.gwt.xml' on your classpath; could be a typo, or maybe you forgot to include a classpath entry for source?
[ERROR] shell failed in doStartup method

Which class is used to load the module, and where to update the new path, respectively?

Answer 1

I spent an hour staring at my gwt.xml file trying to figure out what I had done wrong after restructuring a project. Turned out it was in a sub-package of client instead of client itself. Right at the bottom of a long list of packages and sub-packages too. So in Eclipse's tree view, it looked like it was in the right place. Finally I realized it was one level in too deep. Face-palm time. I would also study the Run Configurations. If you are using Eclipse and you regularly do a "Run As" then "Web Configuration", this time do "Run As" and select "Run Configurations" at the bottom of the sub-menu. Go through it, tab by tab, but in particular study the "Arguments" tab and see if it needs to be updated. You can also get to the settings view the Project -> Properties -> Run/Debug Settings.

Answer 2

Also under "Run Configurations..." > GWT tab, I had to remove and then re-add my app's sole GWT module. Only after doing this I could run the app again.