I just made a Bitbucket account and started using sourcetree, and when I tried to clone the tutorial repo to familiarize myself with the software, it won't let me clone the repo, telling me that "This is not a valid source path / URL" (Fig. 1). I am certain that the URL is correct, I've even launched sourcetree from the clone button on the website, to no avail. When I click the partially hidden "De(tails?)"-button, it will only display an empty popup (Fig. 2). I'm on Windows 7 Home Premium with latest updates installed. I know this or similar questions have been asked before, but none of them seem to apply in the case that the details show no error.
Fig. 1: http://i.imgur.com/DD1Lzuf.png
Fig. 2: http://i.imgur.com/1SuJ080.png