Thanks everyone. I changed the terminal connection block and plug and it is up and running again.
However, I did notice something else when I removed the cover to change the block. One of the components (a capacitor I believe) has a puncture in it. I am wondering if anyone knows if this is an issue. It seems to be working fine, but in the past I have had some unexepcted behavior from my machine on some very long programs. (Always more frustrating when it is 6 hours in when it screws up) I chalked it up to bad gcode, but ran the program again and it still screwed up, but at a different spot. Might this capacitor be the issue?