I get this error any time I try to start a match with any amount of players. I set one-man matches on and it doesn't seem to make any difference with one or more players.
Anyone else get this error at all and know the fix?
Alright, problem solved. The client MUST be hexed to 2.14c in order for the matches to be created, regardless of what version you have. Or so it seems, since I hexed it back to 2.14c and things worked just fine. Maybe I should try a different client and see if that works too, but for the moment, 2.14c seemed to work fine for me.
Edit - Also forgot to mention, single matches still won't work, but I could play with a buddy just fine.