Matt Worland and I were able to figure this out. Apparently I did not have the latest Service Packs and Hot Fixes installed. Also I used the following order for my Acad.rx file:

CADWorxPlant.arx
CADWorxStructure.arx
StructureDbx.dbx
VueExporter.arx
CADWorxEquipment.arx
sls.arx

Thanks for the help