I have the exact same problem except that in addition to all of the above, I cannot even close the update window and I also fail to get the system to shut down or restart normally. When I force a reboot of the system and try to run DCS, I get an error message telling me that the updater is incompatible with my system and requires me to check with the administrators. I have found though that if I start the game directly from the DCS.exe file I am able to get the game to run without going through the updater. I do hope that a solution will be found for this updater issue! I will try to port some log files when I get back from work.
