2 legit steam copies. 1 won't work

[psylnz 34]

Ok here's my info

* 2 Steam copies of the game (seperate steam accounts, seperate ArmA2 licenses), on the same PC.

* Running ArmA 2 OA beta patch (not sure which one, patched about two weeks ago)

* Launching through Steam and Worrom's DayZ mod updater v1.61

* I have two steam accounts, and two copies of ArmA2. I can play my first copy on my desktop, no problem, works fine. With this account I can play ArmA2, DayZ, or OA. I log out of steam and back in with the other account, on the same PC, and while I can play ArmA2 no problem, when I try to start DayZ or Operation Arrowhead, I get the error message

"error creating direct 3d 9 graphical engine"

* PC Specs - i7 975 extreme, quad core 3.33ghz, 12gb ram, ATI 5970 2gb dual gpu.

* Windows 7

Anybody got any ideas??

Edited July 11, 2012 by Psylnz

[sheepdawg 278]

...seems rather redundant no? have you verified you game cache in steam? have you run the beta launcher and the dayz updater while on this accout(regardless if you ran it on the other account on the same computer)?

[GodofCombat 3]

I couldnt run Arma 2 OA when i bought it but i ran it as admin and it worked. try that

[psylnz 34]

Tried applying the patch in the new account. Did not work. Tried one server and spawned on the beach, all my stuff gone. Tried another server and Spwaned back where I had left off with my stuff.

Let me clarify again - I have two steam accounts, and two steam copies of Arma 2/Operation Arrowhead. When I did this with left for dead, it was no problem. Log on as me, play left 4 dead as me. Log on as her, and she plays it on her account. But with ArmA it keeps trying to log me on as Psylnz, no matter which steam account I use.

One is set up for my girlfriend. When I go to her account, the new one, I can't get OA to work. Both the six updater, and the worrom updater will log me in as Psylnz.

Has anyone else had anyluck running two steam and two arma accounts on the same pc?