Transformer 10.1.1 Error TR3119.

[Ucat]

When opening a transformer model from version 8.4 against a new environment ( version 10.1.1 ) security fails even when the new environment has the same namespace information of the previous version.

I Can authenticate the user against the namespace for cube editing but custom views based on the security namespace doesn't work. When trying to remove obsolete security objects from the model  Transformer 10.1.1 presents this message:

"(TR3119) Transformer cannot update the security information. 'XXXXXX' namespace is not accessible. Please log on or contact your administrator." 

Until now I have searched through the transformer documentation but couldn't find anything about this error code.

Please can you help me solve this issue ? 

[Grim]

Is the Authentication provider configured exactly the same as it was in the previous environment?
Specifically the name space name and namespace ID?

[Ucat]

Yes,

The configurations are identical the Namespace ID and the namespace name in cognos configuration. The only difference is that one is configured on Windows ( 8.4 ) and the other one is configured on AIX 32 bits ( 10.1.1 ). Both environments are configured as an IBM Series 7 Namespace.