Thanks a lot Seabass. I was having problems with Impulse and was already cursing you all to hell for belonging to the Dump-Everything-To-C-And-Ignore-Env-Variables crowd. Luckily it's not quite that bad

This needs to be a lot more visible than that, though. On my Windows machines, general programs and the OS are on separate partitions (with %TMP%/%TEMP% being set accordingly) and I was unable to download anything due to space restrictions. With the above info, I could change this, so things should work now.
Also, I find it odd that you cannot just download a file without accompanying installation. That would have been a workaround for the above problem and also in line with the EULA.