Reply to Sync not working right

I have VCI-100 FW 1.4 w/ the 3.6.4 mapping using Traktor Pro v 1.2.7.

The FW upgrade went flawless and everything was working fine months ago before I went on deployment. Now that Im back I have pulled the tools out and have started mixing again. However, this time when I hit the SYNC button to try and sync the upcoming track with the one playing, it only adjusts the BPM to match but wont stay sync'd. The button on the VCI and in Traktor won't stay lit. Any ideas??

I tried searching posts but some are 100+ pages long and I dont have the opportunity to read through them all given my current training schedule.