This is resolve with note 1615838 - SAP Netweaver Enterprise Portal 7.3 iView creation with BI 4.0 results in exceptions.
The note includes a file portalapp.xml that need to be inserted into com.sap.businessobjects.iviews.par that is included in the BI server distribution.
Then deploy the ear file.....
Odd thing is that the note mentions 4.0 and we are on 4.1 SP3...
Environment
SAP BusinessObjects BI Platform 4.0 SP02 Patch 4 or lower
SAP Netweaver Enterprise Portal 7.3
Lee Lewis