File not found QtGui.framework/Versions/4/QtGui for architecture x86_64

[Hedge]

I'm trying to make a library on my Mac.
The latest libs and QtCreator were installed seperately

This error pops up though:

@file not found QtGui.framework/Versions/4/QtGui for architecture x86_64@

When I run 'file QtGui' it gives me:

@QtGui: Mac0 universal binary with 2 architectures
QtGui (for architecture x86_64): Mach-0 64-bit dynamically linked shared libary x86_64
QtGui (for architecture i386): Mach-0 dynamically linked shared library i386@

So I don't know where the problem lies. Do you?