Reply to Took VCI apart - Now some buttons don't work

I took my VCI apart to replace my overlay. Took the whole thing apart, and was careful putting it back together. This was last week, have had no issues till today, and I haven't moved it either.

Today they the cue/pre-listen buttons are non-responsive and so are the two buttons below it that activate decks C and D. All other buttons work fine. I clicked on the headphone icon on the traktor and the lights change colors on the VCI so there is some communication, but nothing at the buttons.

Not sure where to start troubleshooting. I tried a new cable and no luck.

Any suggestions. This kinda sucks!