Hi ArenMook,
Thanks for your help so far.
I can create a simple project, a plane, a cube with rigid body attached, then build and run this, and it runs on my phone and also creates a solution for VS.
As soon as I add in the NGUI package, the error occurs.
If I ONLY add the NGUI DLL part of the package the error still occurs, is there a reference in the DLL to the OrderedDictionary?
Cheers
Sam