Hi Joachim, Thanks for reminding me of this post... I did see it but I understood it to mean that the current ZPatterns won't benefit from the improved BTrees , not that it would break it completely... Itai Joachim Schmitz wrote:

Hi Itai,

I remember that there was some discussion about ZPatterns and the new BTree implementation on this list during the betaphase of 2.3.2. by searching the mail archive for ZPatterns AND BTree I found:

http://groups.yahoo.com/group/zope/message/58841

hope that helps.

On Wed, 2 May 2001, Itai Tavor wrote:

...

Itai Tavor (me) wrote:

...

Hi,

I shut down a Zope instance using Zope 2.3.1, and started it again with 2.3.2. When I tried to access objects on a rack, I got an AttributeError: _setRack. I went back to 2.3.1, but I still get the same error.

Ok, I can take a hint. Somebody doesn't want me to use Zope 2.3.2. All right, I won't. But my project is still hosed. So now I got to restore a backup and lose a day's work.

Is anyone else aware of upgrde problems with ZPatterns?

Itai

Ok, there seems to be something very wrong with ZPatterns in 2.3.2. I've recreated all the Racks from scratch, got them to work, filled them with data. Then I restarted Zope, and the _setRack problem returned. Just to keep it interesting, though, it happens with just 2 out of 4 racks in this application.

At the moment, any work I do on this project is a waste of time. Someone please tell me what's going on here.

TIA

Itai -- -- Itai Tavor -- "Je sautille, donc je suis." -- itai@optusnet.com.au -- - Kermit the Frog -- -- 'Supposing a tree fell down, Pooh, when we were underneath it?' -- -- 'Supposing it didn't,' said Pooh after careful thought. --