Thanks to be interested in my case. Sorry I can't send you an example. It seem to does only after a certain time of "operation". If I close my Inventor and re-open the same drawing, the problem does'nt appear. There is 3 other draftman not having this problem and they use same software (V11 SP2) and we share same templates on a network. I had the same error when trying to save copy as .SAT.
Sincerly