I'm banging my head on my desk using this binding error.. I have checked various of the postings to the BindingExpression path mistake and cannot see nearly anything that works with my circumstance. There is indeed a lot of code with extension .py that uses getters and setters and inheritance https://luxurystudioapartmentsingurgaon.blogspot.com/2025/07/m3m-st-andrews-at-scda-combines-modern.html