SpaceDesign Reporting, Trial Version

I produce some fairly large, fairly complex models. I need to report on various custom dynamic attributes I have defined for the components. I just downloaded the trial version and have not had a lot of luck finding guidance on the web site. The UI for reporting contains fields I want to remove (cost, extended cost, etc.) and there are fields I have managed to add. Defining these latter has produced multiple errors, but somehow the fields got in. I have saved my "customized" report, but somehow settings revert and I cannot remove those defaults (cost, etc.).

What am I missing? At the moment I'm only interested in a reporting engine. I am trialing various alternatives for inclusion in service delivery, and this looked very promising until these (and similar) errors occurred.

Any guidance is most appreciated.