I installed QT 4.7.1 and QT Creator 2.1 RC (downloaded binaries from official QT site), and when I choose any example, I can build it, but I don't see nothing in editor section of the Creator only help file explaining the example. When I open some source file directly everything OK. My OS is Windows 7 64bit. I looked on here, on bug report site and elsewhere and nobody mention anything like this, so it must be me.Thnx.
PS. Only thing that I did when installed was putting correct paths in Tools->Options->QT4, qmake location: c:\qt\4.7.1\bin\qmake.exe and mingw directoty: C:\Qt\qtcreator-2.0.94\mingw and rebuild debugger helpers.