Not sure for 64-bit, but it does say all windows including Vista. Is says that in Vista, you will need to run the program with "RUN AS ADMINISTRATOR". UAC is probaly interfering with it. I'd disable it to test & see.
Here's a link about this : (scroll down to # 5 & 6 -- This is a .PDF document)
any news on getting a fix for this? or maybe some word from Seagate? I have some fears my HD is not doing too well and I really want to use Seatools to find out... :T