SDL Language Cloud - Object reference not set to an instance of an object

Hi,

I have an unusual problem with SDL Language Cloud. When I want to select it from the list of TM or AT providers, within Project settings, I get the following error: "Object reference not set to an instance of an object". Is there something I am not doing wright or this is some "background" technical issue? I use Free Subscription, I am able to log in to SDL Language Cloud within my Trados Studio 2015.

Thanks!