Hey, same behavior (endless repeated loading of the grid values) when doing the following:
Open Chains Manager.
Selecting an existing chain or creating a new one.
Click on "Add a new script to chain"
In the now opened window it's regardless what you do, the only reaction is the loading of the grid values. You're even not able to close the window. The only thing you can do is to kill xMM by the windows task manager. Please take a look at this problem. THX!!