I'm just guessing its one of your safety switches, but a volt/ohm meter will tell you for sure.
Let us know what you find out.
Wiggle, wiggle....
Cycled the PTO lever back and forth, that did it!!
It was disengaged, but for whatever reason, bumped or otherwise, the safety switch was pissed off.
Thanks everyone for your suggestions....hope this helps anyone in the future.