Unable to restore from backup file [SQL Server 2005 Analysis Services]

[StevenK]

I've made a backup of a database (including data cubes) from one server and am now in the process of trying to restore it onto another instance of SQL Server 2005 Analysis Services on another server.

When I try and do this - through SQL Server Management Studio - I get the following error message:

"The ddl2:MemberKeysUnique element at line 63, column 26535 (namespace

http://schemas.microsoft.com/analysisservices/2003/engine/2)

cannot appear under Load/ObjectDefinintion/Dimension/Hierarchies/Hierarchy.
Errors in the metadata manager. An error occurred when instantiating a metadata object from the file......."

What would cause this to occur?

Thanks in advance.
Steve