Error when bringing BEx Hierarchy into OLAP Analysis

Hi everyone,

I am using SAP BusinessObjects BI Platform 4.1 Support Pack 2 and Using IE 9.

I have a number of different hierarchy's on a variety of characteristics in Bex. When I drag / drop any of these into an OLAP Analysis Workspace I get this error

If you drag the hierarchy in again it generally works but OLAP Analysis behavior goes a bit skewy after that.

The hierarchies work perfectly in BO Analysis for MS Office & BEx.

I get a similar message in Chrome so I don't beleive its browser related.

Any suggestions welcome!

With thanks

Gill