Thx. And oops, rookie mistake: My OS is Vista 64Bit.
And yes I originally just downloaded those versions from Saiteks site. Only after they didnt work I installed the one from CD. For some reason that Software-patch always leaves the SST uninstalled. It doesnt even ask. (and when at the end there should be a box to tic "launch Profile Editor", there isnt one). Installer just says "everything is installed" and finishes, but that damn Profile Editor isnt anywhere to be found. Tried both, UK and US versions. Not sure if its a problem with my pc or Saiteks software but its annoying anyway.
+ That older cd-version installs, but gives me that error. Thx anyway. :)