I updated my App to V28, now the design view is full of red error patches.
I tried to delete an reinstall packages to no result.
I tried a basic template with V27 and it works, and design view works
V28 appears to have broken up the few V7 and v4 support nugets into multiple inter dependent nugets which have to be uninstalled inthe right sequence, so now I am going back and forth trying to revert to v27
Please fix this