On Friday, April 12, 2013 2:49:15 PM UTC-5, Simon Knott wrote:

> It could be completely unrelated to the User data model - if they are 
> storing any other serialized objects in the session which have had their 
> structure updated between v15 and v17, then when the session object gets 
> deserialized from the datastore/memcache, it will also have the same 
> symptoms.
>
> The suggested fixes would still resolve the issue as well.
>
> Cheers,
> Simon
>
>
+1.

Let me change what I wrote: Pretty much anything that has been serialized 
could be breaking, if you changed the class between v15 and v17. I bet it's 
the user model, because login is breaking and not anything else, but it 
could be a lot of other things. 

You still need to implement a way to version client session IDs; storing it 
in the User model or the session attribute, both are fine.

-----------------
-Vinny P
Technology & Media Advisor
Chicago, IL

@GOV on AppDotNet: https://alpha.app.net/gov

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