Question : errors when compiling a GWT application with IntelliJ 8

I am trying to do the GWT demo tutorial on http://www.jetbrains.com/idea/training/demos/GWT.html
After compilation I get the following errors:
Error: Unable to find type 'imageviewer.client.ImageViewer'
Error: Hint: Previous compiler errors may have made this type unavailable
Error: Hint: Check the inheritance chain from your module; it may not be inheriting a required module or a module may not be adding its source path entries properly

I have no clue what is going on. Any ideas?

Answer : errors when compiling a GWT application with IntelliJ 8

you need to make sure it is added in your xml
have a read here http://code.google.com/webtoolkit/doc/1.6/DevGuideOrganizingProjects.html