Andy Armstrong has set up a TAPx::Parser subversion repository on one of his servers and he and I are now collaborating to get it working on Windows. Andy's already fixed one Windows bug and I've committed code to make colored test output the default unless running on Windows or not running in a terminal.
Andy's going to look into providing anonymous read-only access so that people can play with 'bleed' rather than me hastily uploading a new development version every few days.
Not only does this mean that someone familiar with Windows can look at the Windows issues, but it also means that I won't have to buy a Windows laptop (though I might do it anyway. Someone's contacted me about an inexpensive on).