There effectively seems to be a problem with creating a PropertyGroupDescription with a null first parameter…
I filed a bug report for this… We’ll keep you posted on the mater.
In a way, I might be able to help with the creation of the property path to reference the attached property… if you could provide additional details on how you tried… as a workaround to the problem cited above.
Imported from legacy forums. Posted by Marcus [Xceed] (had 651 views)