I could use some help please, I have a customer who have Nintex Forms & Workflow 2013. Everything has been running smoothly for a couple of years but just in the last few months on some list items it wont open the Nintex form, I just get a correlation id to refer to. When I look in the ULS logs there are messages saying that "the item does not exist, it may have been deleted by another user".
However we can see the item in the list, and can edit via quick edit. Any ideas?
