Sorry, there's actually no 64bit installer at present. We're working on updated installers (for both 32 and 64 bit) but until they are available we recommend you perform a cross platform installation (see http://www.tersus.com/#Id=241).
As for the loop you got caught into, I guess that happened because you pressed the Link link on the download page, rather than the link carrying the version number. To avoid this in the future I renamed these Links to Info.
For best results, use the Firefox browser..