System.Drawing. Bitmap in reports

I am trying to pass along a data field from my feature into Report Designer. All the other fields work, but the one address field does not. It keeps bringing up "System.Drawing.
Bitmap" when I run a report from Geocortex. The Address field is a string type field in the feature, and it was published as a service. Anyone with ideas as to why the System.Drawing.
Bitmap comes up?