When I try to open this part it generates this error message which takes about 40 cancels to disappear.
I deleted the all model states (except the primary, obviously) from an assembly which contained a sub assembly which contained this part. I now get this error message when trying to open the part or the sub assembly but, strangely, not when I open the main assembly. When in the main assembly, when I 'open' the part I find that there are what looks like two constraints masquerading as model states. The labels refer to things I recognise but more as dimensions or perhaps work planes than constraints.
The part is quite tricky to make and I'd rather not have to remake it. Any help in fixing it appreciated.
