You install the Microsoft Application Compatibility Toolkit (ACT) 5.6 on a Windows Server 2008 based computer. However, when you try to open the Internet Explorer Compatibility Test Tool that is included with ACT 5.6, you receive the following error message:
Test Tool Error
The file size exceeds the limit allowed and cannot be saved
950923 The SNMP Event Log Extension Agent does not initialize correctly on a computer that is running Windows Vista with Service Pack 1 or Windows Server 2008
Go to the above mentioned knowledge base and request for Hotfix download. Install the Hotfix and again start Internet Explorer Compatibility Test Tool. It should work fine.