Quote Originally Posted by screeck View Post
LINK : fatal error LNK1104: cannot open file '..\..\..\..\plugins\imageformats\qjpeg4.dll'
Looks like the file might be in use so it cannot be overwritten.

I also noticed that even bundled demos+tools won't run anymore. For example designer gives error "the beginning of the procedure ?allocateNode@QHashData@@QAEPAXXZ wasn't found from QtCore4.dll" (freely translated from Finnish). It did run perfectly well before. Apparently unsuccesfull compilation breaks everything...
You have an older version of Qt in PATH. Use Dependency Walker to see where it attempts to load the libraries from. A Qt application compiled with Qt 4.4 can be run against Qt 4.5, but not vice versa.