[Zope] ZClass selection property

[Dieter Maurer]

David Little wrote at 2003-7-24 20:07 +0100:
 > I am trying to make a ZClass for an research ethics committee. In the
 > zProject class I have  added a property sheet including a selection for
 > projectType value = projectTypes and added a lines property in the root
 > folder "projectTypes" with the values. 
 > 
 > A combox comes up in the zclass property sheet with the right values
 > from the root/lines propperty but when I add a property sheet interface 
 > I get a error mesage:
 > 	Error Type: AttributeError
 > 	Error Value: read
 > When I delete the projectType property, adding a property sheet
 > interface works.

That's very strange. There should be no "read" involved.

Can you look at the traceback, please.
When you do not understand it, please post it.
However, I will soon be out of town for several weeks.
Probably, others need to help you.


Dieter