seems I got it broken down to this pc being the issue . I checked my laptop and I installed v31 at some point (which I forgot) . Bc worked fine in it so I dropped the license from the laptop and installed it on this pc and it seems to work now . I don't know what has happened on this computer to lose both of my licenses , but I'll have to get that sorted with bc this week . At least I can get back to my stuff for now