Problem with Smart Switch

I just upgraded my Tab S 8.4 LTE from 6.0.1 (stock) to Mokee 7.1.2. Before starting I did a full backup with Samsung’s Smart Switch. After upgrading successfully I’m trying to restore the Smart Switch backup, but Smart Switch says Unsupported Device whenever I plug it in. I’ve set usb to MTP and confirmed I can access files on the device from the desktop. Is there something in this ROM that might prevent Smart Switch from recognizing device? Any way to fix this? Any ideas would be appreciated.