RE: "An unexpected error occurred" when transitioning from legacy solution to model-driven app
Yes I created new app based on an existing unmanaged solution. I chose to include the existing Site map. Every time I do this it seems to present the "An unexpected error occurred" message.
I tried not including the Site map, and this seems to work, with no error message.
Oddly enough, in the first app iteration I did [with Site map included.], the "An unexpected error occurred" error message eventually just disappeared. Very odd! I really did nothing but ope/close the App a few times. Now I just have warnings which I can work through.
Thanks!