Banshee: please, pick a version

Banshee is a cross-platform audio player built using Mono.

If you go to the official website and install Banshee for Windows, you’re offered version 2.4.0 with warnings about it being alpha and all (as of April 16, 2013 the latest version is 2.6.1). Once you’ve downloaded it, when you then run it up, you get the following dialog:
install-then-upgrade

Infuriating.  Why wasn’t I offered that one by the website? Naturally, one selects “Hell yes, give me the current (actually, still behind the main branch, but more current than what I’ve got) release!”, which is then followed by
download-failed

and no freaking explanation of what went wrong. How am I meant to fix this? Given that the project is built for a VM, why am I offered one version, then offered the chance to update to a different version, and both of these versions are behind the current release?

Gagh!