[Zope-dev] Could not load state?

[Steve Alexander]

Chris Withers wrote:

> Hi,
> 
> I've started seeing errors like this:
> 
> ------
> 2001-02-27T11:18:34 ERROR(200) ZODB Couldn't load state for
> '\000\000\000\000\00
> 0\021\275\220'
> Traceback (innermost last):
>   File E:\Zope\23C76D~1.1B1\lib\python\ZODB\Connection.py, line 477, in
> setstate
> 
> AttributeError: 'None' object has no attribute 'load'
> 
> ...popping up from time to time. I think they're coming from a product we've
> written, but beyond that I have no idea what's going on.

I hazard a guess that you're changing a mutable attribute of a persistent object, without doing a _p_changed=1 on your persistent object.

--
Steve Alexander
Software Engineer
Cat-Box limited