PLEG Error when viewing status report

I am getting an error when viewing the status report of a PLEG device. The status report will come up after clicking close.

The Error is: “Trigger Description error: TypeError: undefined is not an object (evaluating ‘tObj.args[argIndex].value’)”

I have done a Reload LUA and rebooted the Vera Plus.

Does anyone know what is causing this?

Thanks.