New Message: Error when custom prefs modified

[webmaster at userland.com]

A new message was posted:

Address: http://frontier.userland.com/discuss/msgReader$11723

By: Chris Bunch (chris.bunch at ndm.ox.ac.uk)

I am trying to modify custom prefs to get a more relevant signup information from new members to a particular site.

If I do this, then attempts to load the sitename/member/signup page produce this (gramatically-challenged) error:

/Sorry! There was an error: Can?t get the ?type? attribute because the table doesn?t an attribute with that name. /

I have tested (with xml.compile) that the replacement text in custom prefs is good xml.

All is well again if I resore the defaults to custom prefs.

I have access to my server: can anyone suggest where I should look?

I am also having difficulty locating documentation on how the custom prefs sytem works 'under the hood'. Does anyone have any pointers?

I am using Frontier 9 on Mac OS X 10.1.5.

All help appreciated

This is a Manila site.. http://manila.userland.com/.