BIRT is connected to DB but does not pull data when I preview

I use the Troux Enterprise Architecture tool and its analytics are built from BIRT reports. The back end database for Troux is SQL Server 2005. I just got the BIRT data source to connect to the SQL DB. My next move was to open a report that is already made and working in Troux and open it in BIRT. I saved the rptdesign file and opened it up in BIRT. It opens with the Troux theme like it should, but when I preview the report it times out and says there is no connection with the database, but when I go to the data source and test the connection it says it is working. I am really confused by this and unsure of my next steps.

I can provide more details and/or screens if need be. Please help. Thanks!