Ok, sounds like you don't... Then check if your %PATH variable is set in windows (which should be done in a proper installation of creator) and look inside qtcreator with the example opened under Projects->build setting->(Debug|Release): Qt Version. Is there a valid qt version defined? check via the button Manage Qt Version. For your case aaaaaaahhhhh now I see the default error:
You HAVE to install Qt in a directory WITHOUT any space. "Program Files" is not valide. Reinstall Qt g.e. c:\qt
Lykurg
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