just from experience of having to install / uninstall WB many times, can I suggest to name your eclipse modules more consistently:
(now that I know them all by heart )
for example:
GroupLayout Support
Google GUI GroupLayout Support
CSS Editor
Google GUI CSS Editor
GWT Designer
Google GWT Designer
GWT Designer Core
Google GWT Designer Core
Shared
Google GUI Shared
WindowBuilder Common UI Support
Google WindowBuilder Common UI Support
WindowBuilder Core
Google WindowBuilder Core
WindowBuilder XML Core
Google WindowBuilder XML Core
Swing Designer
Google Swing Designer
SWT Designer
Google SWT Designer
SWT Designer Core
Google SWT Designer Core
WindowBuilder SWT_AWT Support
Google SWT AWT Support
SWT Designer XWT Support
Google SWT Designer XWT Support