when I try to view the Main window (in design mode) in visual studio it shows this error:

After updating to Visual Studio 16.7.2 from 16.6.x I get this too :(
After updating to Visual Studio 16.7 from 1.6.x I get this too :(
If you click "Ignore and Continue" it shows the form but I don't know if it's safe though!
I think I will close this for now, since is from Visual Studio...
Hopefully it will work again in Visual Studio 16.7.3...
16.7.3 update solves the problem ;)
Most helpful comment
16.7.3 update solves the problem ;)