There is now a catalog entry for installing Seaside 3.1.1 into Squeak 4.5.

I used this as the script for the entry.  I only tested that it loads
without incident, nothing else.

((MCHttpRepository
        location:
'http://smalltalkhub.com/mc/Seaside/MetacelloConfigurations/main'
        user: ''
        password: '') versionNamed: 'ConfigurationOfSeaside3-dkh.153.mcz') load.
((Smalltalk classNamed: #ConfigurationOfSeaside3) project version: '3.1.1') load

On Sun, May 25, 2014 at 9:00 AM, Johan Brichau <johan at inceptive.be> wrote:
> We are pleased to announce Seaside 3.1.1 [1].
>
> This is a bugfix release for Seaside 3.1 but features a couple of notable enhancements:
>
>         • Ported to Gemstone 3.1
>         • Slime is now available on Squeak, Pharo1.4, Pharo2.0 and Pharo3.0
>         • Gettext is now included in the ConfigurationOfSeaside3
>         • DateAndTime>>jsonOn: now prints the ISO8601 representation in a string
>         •  Issue 783 : Don’t require nesting #object: in #value: in JSON arrays
>
> A big thanks to everyone involved for making this release happen.
>
> best regards,
> The Seaside Team
>
> [1] https://code.google.com/p/seaside/wiki/Seaside311Changelog_______________________________________________
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