Thanks @milesb, certainly that error code is rather vague and searching around didn’t produce much useful information, although
directx was named as a culprit in a number of instances. Worth updating this and graphic card drivers just in case.
I also found a thread that may be relevant related to removing the entry point from the managed DLL’s
Full instructions can be found @ https://stackoverflow.com/questions/11835748/0xc0020001-the-string-binding-is-invalid-only-occurring-in-wpf
To be clear, you get this error running the supplied sample programs unmodified?