Directory Opus sync malfunction

I just upgraded my system to an x64 vista pc and I've noticed a new problem that DO has never given me before. For me to get a successful sync, I have to have two unsuccessful attempts before it functions normally.

When I sync a folder (from my "C" drive to my "T" flash drive) and have the files check what needs to be synced, the "T" drive will suddenly be changed to the "I" drive (the memory card drive letter). I have to cancel that. Then on the second attempt, I compare files, and inexplicably the source and destination folders switch, so I have to cancel that attempt. Then, on the third attempt, I compare the folders and it functions perfectly as it always has on my previous system.

This has been consistent since I upgraded my system two weeks ago. I've tried reboots, no luck. I have the latest DO version (9.1.3.0.3449 x64) and I don't know what else to do. Thankfully it does eventually work, but having to always have two bad tries before the successful one is becoming very annoying. Please help. Thanks.

Could you post a screenshot showing the lister and sync panel setup?

Wow, after I took a screenshot of the lister setup, I noticed what I think the problem is. On each of the explorer windows, there was two tabs on the bottom. I tried resaving the lister, making sure that there was no tabs open while saving, and now everything seems to be working perfectly.

Thanks.