I am trying to add a mime type (image/svg+xml) to a default twisted web server (mktap web --path c:/proj/html) and although it looks like it is changed when I add it using coil, when I close and restart coil it doesn't show up.  Any suggestions on things to look for? 

Platform: WinXP Pro, Python 2.2 (activestate), Twisted Twisted-0.19.0rc3

Thanks-
Karl