> I inherited a database where they created a blob field as type 2.

This is the type for BLR and in IBO you are going to have the BLR rules
applied to whatever contents are stored in the BLOB and you are likely going
to have errors returned.

You need to remedy the database or hack your version of IBO to disable
making it apply the BLOB filter when dealing with that sub-type.

Jason Wharton