2272459 - Dump CX_SY_REF_IS_INITIAL when copying an environment - BPC NW

When trying to copy an environment from the BPC web admin, the following error is displayed :

"An exception of type CX_SY_REF_IS_INITIAL occurred, that was not caught anywhere in the call hierarchy. It was not handled locally or declared using a RAISING clause".

And the following ST22 dump is reported :

Category               ABAP Programming Error
Runtime Errors         UNCAUGHT_EXCEPTION
Except.                CX_RS_PROGRAM_ERROR
ABAP Program           CL_RSDRH_HIER_CACHE===========CP
Application Component  BW-BEX-OT
Date and Time          25.01.2016 09:55:16
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|Short Text                                                                                        |
|    An exception has occurred that was not caught.                                                |
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|What happened?                                                                                    |
|    Exception 'CX_RS_PROGRAM_ERROR' was raised, but it was not caught anywhere                    |
|     along the                                                                                    |
|    call hierarchy.                                                                               |
|                                                                                                  |
|    Since exceptions represent error situations, and this error was not                           |
|    adequately responded to, ABAP program 'CL_RSDRH_HIER_CACHE===========CP' had                  |
|     to be terminated.                                                                            |
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|Error analysis                                                                                    |
|    An exception has occurred which is explained in more detail below. The                        |
|    exception, which is assigned to class 'CX_RS_PROGRAM_ERROR' was not caught and                |
|    therefore caused a runtime error. The reason for the exception is:                            |
|    Error in BW: BW temp-hierarchy error during invalidation                                      |
|                                                                                                  |
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• SAP Business Planning and Consolidation 10.1, version for SAP NetWeaver
• SAP BW 7.40

EPM, SAP BPC, NW, SAP BusinessObjects, Dump, BW temp-hierarchy error during invalidation, RSDRHTREXBUFFER RSDRHLRUBUFFER, ABAP program, 'CL_RSDRH_HIER_CACHE===========CP', "UNCAUGHT_EXCEPTION",  "CL_RSDRH_HIER_CACHE===========CP", "INVALIDATE" , KBA , EPM-BPC-NW-ADM , Admin , Problem