I'd have to go back a couple of years and review which ones have upgrade issues. I remember that Solidworks is one of them. We are under maintenance contract

I'd have to go back a couple of years and review which ones have upgrade issues. I remember that Solidworks is one of them. We are under maintenance contract on SW itself (~$1,500 year per seat), so that's not a problem. The FEA tool, which cost ~$12K as well as our integrated CAM sofware (I think it was around ~$8K) I believe are the issues. Since the incremental improvement wouldn't really buy us much of anything measurable it makes no sense to spend thousands per workstation just because you upgraded the OS.