I am getting the above error when I try and save a form while in designer mode. I have made some significant changes to this form.

I now have 9 lookup field looking directly through Nintex at about 6 different lists (Instead of lookup fields from my list looking at the same reference lists through SP).

tried to save my form and its says Nope - this is 3 hours of work today and at least 2 days of support work elsewhere. Helllllppppppp