GLwidget plugin causes Qt Creator to crash

I’m using Qt Creator 2.2.1 under Redhat

I created a simple test designer plugin. Simply subclassses a widget. I copy this to the plugins/designer directory and it works

I try again. This time subclassing GLWidget. Qt Creator crashes as soon as I open a .ui file.

I get the error message:

Cannot mix incompatible Qt library (version 0×40703) with this library (version 0×40704)
Aborted (core dumped)

Clearly this is something to do with Qt Creator using 4.7.4 libraries and my having qt 4.7.3 installed but is there a way to get these to work nicely together?

test.h

test.cpp