OpenManage Inventory Agent Installable rule fail

Hi,
I'm distributing the Inventory Agent using SCUP, but now I have found that it does not install on E4310 and E6410 systems. The part of the installable rule that detects model always evaluates to false even though the correct model numbers are present in the WMI query. No syntax errors exist as far as I can see. I have also tried to run that qurey interactively with WBEMTEST and it fails there too, even when I remove all other models from the query.
Any suggestions what the problem might be?
We are using version R281738 of the Inventory Agent.

Here is a part of the rule that always fails on E6510 systems:

SELECT * FROM Win32_ComputerSystem WHERE (((Model >'Latitude E6510') AND (Model 'Latitude E6510 ATG') AND (Model 'Latitude E6510 XFR') AND (Model

But if I change the rule to:

SELECT * FROM Win32_ComputerSystem WHERE (Model = 'Latitude E6510')
then it succeeds.

The odd thing here is that the same syntax is used for all other models and on those it evaluates correctly.

This question is also posted at MS technet: http://social.technet.microsoft.com/Forums/en-US/configmgrsum/thread/d2a3dfd0-ed9c-4c6d-85b4-f5f5f47016c5

Regards
Per Eriksson