Ben Avery wrote:

Now when I try to create an instance of it in a development folder,I get the constructor form, but then a NameError: *Error Type: NameError* *Error Value: global name 'CalendarEvent' is not defined* trace below: ...snip... File /export/home/Zope-2.5.1/lib/python/DocumentTemplate/DT_Util.py, line 159, in eval (Object: CalendarEvent.createInObjectManager(REQUEST['id'], REQUEST)) (Info: REQUEST) File <string>, line 2, in f NameError: (see above)

I have done this exact procedure before, with success. Now it doesn't work. I've rebooted the zope server. I'm using Zope 2.5.1, Python 2.1.3 on Solaris 2.7.

Has anyone else seen this, or can anyone tell me what I'm doing wrong?

Yo Ben, yes I've seen it. A couple of days ago. Cost me almost half a day to get working again. From what I can reconstruct, I had done the following: I had created a simple product some days ago, with a single folderish Z-Class in there. Then I successfully worked on that Z-Class and created instances off that Z-Class. Yesterday I created another Z-Class in my product. I set up the second Z-Class in the "Subobjects" pane, so I can insert instances of it into the first Z-Class. It doesn't like that. So I go back, delete my second Z-Class (with corresponding Constructors, Factories and all that). Next I create a new Product, insert my second Z-Class. Find out I can't insert it into an instance of my first Z-Class, with the same error that you've got. Tryed to insert it into the Root folder, same error. Tryed to insert the first Z-Class into the Root folder. Same error. Made a new Product/Z-Class, tryed inserting that. Same error. Restarted Zope. Rebuilt database. No go. I actually messed around a little bit more, then had the good idea to export my first Product as a backup. What I did in the end: Well I am lucky to have Gidon here, my cow-orker and local Zope hero. Together we decided that there must be something messed up with the ZODB, probably because that machine was running a 2.5.1b1 of Zope (btw. using Python 2.1.2 on OpenBSD 3.1/macppc). So I installed Zope 2.5.1 (without beta) with a little help from Gidon (and learned something more ;?) Then tryed to run the old Data.fs with the new Zope. Same errors. So I took the "empty" Data.fs from the new Zope install and imported my valuable Product into it. That solved it. Of course I was lucky that this instance had just this one piece of real work in it. Conclusion: I can only guess at the reason for the problem. But if I need to guess I would think that the beta version messed up, probably because I was doing something weird with trying to add different Z-Classes from the same product into each other while also editing Class and Instance rapidly in separate windows. But this is just a guess from a short experience on Zope. I've saved a copy of the "bad" Data.fs for my cow-orker and he wants to have a look at it when he ever finds time. Also under subject "Disappearing manage_options Tab" Barry Berenberg wrote:

Are there many other browser-specific problems that anyone is aware of? For example, using IE (either Windows or Mac), I am unable to add instances of add instances of ZClasses I have written - Zope just returns a NameError. (I once tracked down another reference to this on Zopera, but I'm unable to find it again.)

I don't know if my problem was browser specific. I am using Mozilla 1.0 on Mac OS X to access the management interface. But before and after this incident, I was always able to add instances of ZClasses. Regards, Sascha -- Sascha Welter <mailto:welter@network-ag.com> Network AG Programmer, Sysop, IT-Support, BOfH Ruetistrasse 17 Tel. 01 755 40 20 CH-8952 Schlieren <http://www.network-ag.com>