[Zope-dev] Zope 2.1.0 beta 1 caution - please read

[Brian Lloyd]

Hi all -

We (DC) have run across a bug in the 2.1.0 beta that has 
given us some grief on the zope.org site, and I wanted to 
post a caution to those folks currently using the beta.

In short, if you are doing any ZClass development where 
your ZClasses are based on Python base classes that are 
still in development (e.g. you are updating the Python 
base classes at times), there is a risk of getting a non-
unpicklable object stuck into your object database. While 
the sequence of events required to cause this is pretty 
arcane, it can potentially be a real pain to recover from. 

So, if you are doing active ZClass development in 2.1.0b1 we 
strongly suggest that you either go back to 2.0.1 or take 
a break until tomorrow or Monday (I hope to have a 2.1.0 b2 
ready that resolves this by then). If this is too painful 
(or you're hardheaded or just like living on the edge :)
at least be sure to back up your Data.fs regularly just in 
case.


Brian Lloyd        brian@digicool.com
Software Engineer  540.371.6909              
Digital Creations  http://www.digicool.com