How to clean the Beta version compile environment?

[Yann]

I installed Qt5.0 Beta1 & 2 before, after I uninstalled all of the beta version and installed the latest 5.0.1 version, when I tried to compile, the error came out:

Could not find mkspecs for your QMAKESPEC(default) after trying:
/Users/yan/Qt5.0.0beta1/Desktop/Qt/5.0.0-beta1/gcc_64/mkspecs

Furthermore, the old beta compile path still exists in the Qt Creator configuration:
http://ww1.sinaimg.cn/bmiddle/75b71b7bgw1e1m0uzqo25j.jpg

Is there any solution to reset all the compile path?

[sierdzio]

Remove the folder in question?