@Esa Lehti - hi, did you get anywhere with this? If not, you could try emailing their support directly at email@example.com - seems to have been abandoned some time ago so not sure if it'll install or run ok on Windows 10.
@Alex Urbach - Registry Crawler is not what you think. It doesn't have a scan & 'clean' or repair function or anything like it. It's a searcher & 'editor' only & the best of its kind I've ever used or tested, even in 2017. I find it hard to believe a program so good has been abandoned by its developer (I'm sure there's a valid reason). Possibly sold on to another developer, but I've not found another shareware/freeware editor that works as well & as blindingly quick with the useful functions it has.