Hi Thanks for your reply. In the Global Variable Editor, I have 2 options: 'wx' and 'qt4'. I changed the variable to 'wx' in the dropdown but its not saving after I close the window. Also, I have the following settings for these fields:Base directory is C:\wxWidgets-2.9.1; Include is C:\wxWidgets-2.9.1\include; lib is C:\wxWidgets-2.9.1\lib; obj is blank - does this need a directory as well? Should I switch to widgets v2.8 and would this enable the GUI designer? Thanks again, please provide some suggestions.