To troubleshoot, I tried to use the secondary binding of "fire weapon group 2" which was key "2" and it fired correctly. I also tried setting "fire selected weapon group" to mouse 2, and that would not work as well. I even went into my mouse settings and set the middle click on my mouse to mouse 2, loaded up MWO and tried using that, and it also did not work.
To be clear, right click (mouse 2) appears to work in all other applications and programs besides MWO.
So. My conclusion is some really bizzare and frustrating black magic is happening, and I can't figure it out. If anyone has the same mouse and is experiencing issues, or if anyone has noticed anything else that might be the issue, I would appreciate your help.
Edit: added mouse and MWO settings http://imgur.com/a/Q7pXY#H0nia
Edited by Wilson, 17 January 2013 - 04:49 PM.