No not just TB. I even tried to install Pegasus, same thing. Plus when I try to uninstall from add/remove, (win 7 ), That won't work either. I downloaded the same one you linked to but it will unpack, you hit the install button, then it, almost immediately goes to an empty white window with only the finish button to click.
When I do I can find thunderbird under %appdata% but there's nothing there and it won't run.
That's what makes me wonder about the installer, but I haven't had any luck getting a new installer. Some folks are claiming that 4.5 installer installation has been messing up other files and programs and I can't seem to get a download for ver. 5 installer. I am working on an HP pavilion so there is no windows 7 disk.