I already fixed it, just thought other people might experience and this might help. I have an encrypted device (SD card) mounted to drive letter "Y" Every time I tried to direct BT Sync to the drive, I received the "Don't Have Permission To Write To The Selected Folder" error. I was using the "manual connection" and pasting the link. After basically reviewing every permission and setting and wasting hours... I realized that BT Sync was adding another \ to the destination path. So Y:\Folder became Y:\\Folder - causing the error. This ONLY happened on the encrypted SD card - when I used an unencrypted sd card or just browsed to C, this didn't happen.