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When you try to configure PolicyMaker Registry Extension 2.0 items in the Group Policy snap-in, the Group Policy snap-in crashes. When this issue occurs, the following event is logged in the Application log:
Event Type: Information Event Source: Application Popup Event Category: None Event ID: 26 Date: date Time: time User: N/A Computer: computer_name Description:Application popup: Group Policy: mmc.exe - Application Error : The instruction at "0x7e99354a" referenced memory at "0x00000000". The memory could not be "read".Click on OK to terminate the programClick on CANCEL to debug the program.
This issue occurs because of a conflict between the PolicyMaker Registry Extension add-in and Windows Internet Explorer 7.
To resolve this issue, configure the following registry value in Registry Editor: