Hi, I'm newbie in this area and I'm trying to get my Obc program to start. I've downloaded it with no problem, tried even restart my pc but every time I try to open Opc it just notifies that program has started successfully but nothing else happens.Then after couple seconds it seems to shut down from tool bar. Is my OS too old to run this this program and do I need to update that into Win10 or is there any other way / thing I should be aware or do? Is there older version of Opc that works on older OS and where can I download it?