Extension updates don't download for TB3 w/ the nightly build of Integrator.

Per the Inverse team's earlier advice, I've got a separate updates.php file for TB 2 clients and an updates3.php file for TB 3 clients.

1) Integrator's extensions.rdf:

isi:updateURL="https://my.sogo.server/plugins/updates3.php?plugin=%ITEM_ID%&version=%ITEM_VERSION%&platform=%PLATFORM%">
<li>
<Description
em:id="sogo-integrator@inverse.ca"
em:name="SOGo Integrator"/>
</li>
<li>
<Description
em:id="sogo-connector@inverse.ca"
em:name="SOGo Connector"/>
</li>
<li>
<Description
em:id="{e2fda1a4-762b-4020-b5ad-a41df1933103}"
em:name="Lightning"/>
</li>
<li>
<Description
em:id="lookout@aron.rubin"
em:name="LookOut"/>
</li>

2) Edited parts of plugins/updates3.php:

= array( "sogo-connector@inverse.ca"
=> array( "application" => "thunderbird",
"version" => "3.102pre1",
"filename" => "sogo-connector-3.102pre1.xpi" ),
"sogo-integrator@inverse.ca"
=> array( "application" => "thunderbird",
"version" => "3.102pre0",
"filename" => "sogo-integrator-3.102pre0.xpi" ),
"{e2fda1a4-762b-4020-b5ad-a41df1933103}"
=> array( "application" => "thunderbird",
"version" => "1.0b2.102ipre2",
"filename" => "lightning-1.0b2.102ipre2.xpi" ),
"lookout@aron.rubin"
=> array( "application" => "thunderbird",
"version" => "1.2.11",
"filename" => "lookout-1.2.11.xpi" ));

...

$applications
= array( "thunderbird" => "<em:id>{3550f703-e582-4d05-9a08-453d09bdfdc6}</em:id>
<em:minVersion>3.0</em:minVersion>
<em:maxVersion>3.1.*</em:maxVersion>" );

...

<em:updateLink>https://my.sogo.server/plugins/&lt;?php echo $plugin["filename"] ?></em:updateLink>

3) Apache logs:

[11/Sep/2010:16:10:32 -0500] "GET /plugins/updates3.php?plugin=lookout@aron.rubin&version=0.00&platform=Linux_x86_64-gcc3 HTTP/1.1" 200 784

[11/Sep/2010:16:10:33 -0500] "GET /plugins/updates3.php?plugin=sogo-integrator@inverse.ca&version=0.00&platform=Linux_x86_64-gcc3 HTTP/1.1" 200 809

[11/Sep/2010:16:10:34 -0500] "GET /plugins/updates3.php?plugin=sogo-connector@inverse.ca&version=0.00&platform=Linux_x86_64-gcc3 HTTP/1.1" 200 804

[11/Sep/2010:16:10:35 -0500] "GET /plugins/updates3.php?plugin=%7Be2fda1a4-762b-4020-b5ad-a41df1933103%7D&version=0.00&platform=Linux_x86_64-gcc3 HTTP/1.1" 200 840

Thank you.