Im trying to run a report in Oracle 10G. The report uses reference cursors. Details below

RW Client & .rdf file not (.rep)
Oracle DB -
Reports - 10.1.2

The report fails with the following error
REP-0177: Error while running in remote server
Run time error in the PL/SQL development environment (DE).
PDE-PSD001 Could not resolve reference to <Unknown Program Unit> while loading <Unknown> <Unknown>
REP-008:Unexpected memory error while initializing preferences.

Any suggestions will welcome.