I recently purchased a non-retina iMac and installed tuxera and both my toshiba canvio connect drives (portable 1tb & desktop 3tb) worked without a problem. I have since returned the computer for the retina model and when I plug in either of these drives to the computer I get a "Tuxera NTFS for Mac: Error while validating key" message. I can view the files on the drive but I cannot read or write to it. I desperately need to access this data, any help?

Thanks