Just thought I'd let everyone know what the solution was or the trigger problem. I was in fact using a stereo 3.5mm male-male cable. I've since replaced it with a mono 3.5mm male-male cable and its working flawlessly. At least it seems that way for now.

Someone actually posted that the problem may be the cable but I didn't really go in for that solution at first. Thanks to whomever offered that advice.

Cheers.