Hmm this is quite strange! I wonder if it's because I didn't set the operating system for the download? Are you using the itch io launcher or just downloading from the website? It should show this when you click download now :)
Sorry for the very late reply, I didn't noticed your message in time. Yes I guessed that it was probably the issue, but it seems like you set it up now cause I soon as i hit "Instal" this time, it's started installing. To answer your question thought, I've tried both the upsite and the client before and none allowed me to download/install. It's installing right now, so I'm looking forward to toy with it and have fun. Thanks a lot.