Yeah, SolidWorks also does this. If you get a file from a later version from a customer, you cannot open it on the older system even if it is just a year old. E

Yeah, SolidWorks also does this. If you get a file from a later version from a customer, you cannot open it on the older system even if it is just a year old. Entire machine shops get sucked into this - they already run on thin margins and it is probably one of the most expensive aspects of running a shop.