First time I have ever got this error. Quite sure it is related to the patch on 1/12/15. Doing some searching around it is apparently client-side.
I have done the following:
-Restart Launcher
-Restart Computer + Router
-FlushDNS of router
-Attempt to run repair (get the same error 102)
-Change properties of launcher to run as administrator and then run as administrator.
-Run game consultant and there are zero errors.
I've never had any issues before so I'm just wondering what is going on..