we encountered a similar error (i.e. Could not load oid + broken 
products etc....) a while back on our install of 2.1.6 on Windows. We 
first tried deleting all products gradually in the hope that we could 
trace which one of them had caused the 'corruption', but to no avail. 
The error would not go away even after we had essentially deleted 
everything from the Zope installation other than the basic products. 
The only way we solved the problem was by upgrading to 2.2.2 and then 
manually importing all products and content into the new Zope 
installation :( If I am not mistaken this problem has been reported 
several times to this list with essentially the same reported 


--- In [EMAIL PROTECTED], Alexander Chelnokov <[EMAIL PROTECTED]> wrote:
> Hello All,
> After a linux machine crash or cold restart something strange is 
> on with Zope (2.2.2) - all objects built on ZClass-based products 
> Yihaw or QSurvey are broken. Products are in Product folder, and i
> even can add an object and it works, but when i try to access it in 
> new browser window it reports
> ==========
> This object is broken because the unknown product that created it is
> no longer installed or is installed incorrectly. Please contact your
> product vendor for assistance.  
> Note that the data associated with this product has not been lost, 
> will be accessible again if the product is reinstalled.
> ==========
> Well, i removed QSurvey and tried to re-install its current 
version -
> something goes wrong again:
> ==========
> Zope Error
> Zope has encountered an error while publishing this resource. 
> Error Type: Could not load oid ={, pickled data in traceback info 
> contain clues
> Error Value: None
> ==========
> Is there any way to fix ZODB less radical than complete reinstall?
> -- 
> Best regards,
>     Alexander N. Chelnokov
> Ural Scientific Institute of Traumatology and Orthopaedics
> 7, Bankovsky str. Ekaterinburg 620014 Russia
> ICQ: 25640913  
> _______________________________________________
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