Login screen error when ran in outlook

When you try and run the ITS in Outlook a script error occurs. The error says window.location.hostname.match(...).8 is null or not an object. If you setup a global user, i.e. skipping the login page the error does not occur.

It asks if you want to debug. If you click no and skip past the error you can then login and use the ITS screen from within outlook.

Is this something that I can fix?

Thanks for your help

Karen