ID 501410 - An exception occurs when cancelling a dialog via the Scripting Editors Configure Editor.

Problem summary
An exception occurs when cancelling a dialog via the Scripting Editors Configure Editor.
Customer reported version
modo.15.2v2
Customer reported platform
windows10
Steps to reproduce
1) Open Modo and select Layout > Palettes > Scripting.
2) Cancel a dialog when selecting Editor > Configure Editor inside of the Scripting Window.
Expected behaviour
An exception should not occur.
Actual behaviour
An exception occurs.
Workaround
Unknown. 
Logged at Developers Request