I upgraded my Mac-mini to Yosemite and my Tuxera to version 2014. I have a Seagate 4 TB NTFS formatted external drive. The computer will accurately read and write to this drive through the USB port, but not through the Thunderbolt port. It was able to do so before the upgrade, but now it assigns Japanese characters to the drive and misreads it when used with the Thunderbolt port. Apple tech support claims it's a Tuxera problem.