AT 3.0 under RT 4.0 Search Error

[tbrumm]

Hi,
we figured out an reproducable error if we create a new search like this:
Query: Type = 'Servers' AND CF.{Manufactor} LIKE 'Dell'

WebUI Error: There was an error parsing your search query: We don't know how to join on RTx::AssetTracker::Type-RTx::AssetTracker::Asset. Your RT admin can find more information in the error logs.

Log File:
[5872] [Thu Sep 4 11:29:21 2014] [warning]: Use of uninitialized value in hash element at /opt/rt4/local/plugins/RTx-AssetTracker/lib/RT/Interface/Web/QueryBuilder/Tree_ATOverlay.pm line 32. (/opt/rt4/local/plugins/RTx-AssetTracker/lib/RT/Interface/Web/QueryBuilder/Tree_ATOverlay.pm:32)
[5872] [Thu Sep 4 11:30:48 2014] [error]: Couldn't parse query: We don't know how to join on RTx::AssetTracker::Type-RTx::AssetTracker::Asset at /opt/rt4/local/plugins/RTx-AssetTracker/lib/RTx/AssetTracker/Assets.pm line 1243.

Stack:
[/opt/rt4/local/plugins/RTx-AssetTracker/lib/RTx/AssetTracker/Assets.pm:1243]
[/opt/rt4/local/plugins/RTx-AssetTracker/lib/RTx/AssetTracker/Assets.pm:1521]
[/opt/rt4/local/plugins/RTx-AssetTracker/lib/RTx/AssetTracker/Assets_SQL.pm:284]
[/opt/rt4/sbin/../lib/RT/SQL.pm:177]
[/opt/rt4/local/plugins/RTx-AssetTracker/lib/RTx/AssetTracker/Assets_SQL.pm:294]
[/opt/rt4/local/plugins/RTx-AssetTracker/lib/RTx/AssetTracker/Assets_SQL.pm:373]
[/opt/rt4/local/plugins/RTx-AssetTracker/html/AssetTracker/Search/Results.html:117]
[/opt/rt4/sbin/../lib/RT/Interface/Web.pm:635]
[/opt/rt4/sbin/../lib/RT/Interface/Web.pm:335]
/opt/rt4/share/html/autohandler:53