Tor reinstall won't work in OSX

I was running a 0.1.0 version of tor and privoxy happily for a few months on osx tiger then privoxy stopped working so I decided to upgrade. I removed tor and privoxy following the instructions on the mac documentation but whenever I try to install 0.1.1 (or 0.1.0) it recognises it as an upgrade and will not install. I have tried repeating the uninstall guide and restarting a few times, but it makes no difference. Any ideas what the install is looking at to decide it is an upgrade?

[Automatically added by flyspray2trac: Operating System: All]

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Username: dledmonds