What Linux distro are you using? Only Ubuntu is, or will be supported. For others you'll have to fix things yourself unfortunately!
Linux Mint, it's the Ubuntu based version. Sorry to bother you with this my man, everything else works fine with the app, it's just the overview.
This might be related to the default browser selection for your distro, but I'm not sure to be honest. It should open an HTML and I think it attempts to do that using your default browser, which might be set to the terminal for some reason.
Thanks for the reply, it was my MIME associations, got somehow mixed up (installed some apps). Cheers!