I Am banging my head on my desk with this binding mistake.. I've checked several from the postings for your BindingExpression route error and cannot see anything at all that works with my circumstance. two @KellyThomas Just looking to keep the instance simple. To get it done ideal you'd need https://share.evernote.com/note/9f77c0f1-9e84-2ae0-ce6b-48761e7f252c