SYMPTOM:
When entering the MDX Cube Catalog the user receives the error "Index out of range" and they cannot open the MDX Cube Catalog to import MDX cubes or to view the structure of existing cubes. In this case, reports can still be successfully executed against the MDX data source.

CAUSE:
This is a known issue with Strategy Developer 9.3.x - 10.x. There are 2 specific criteria that cause the issue to occur. 1) The project source is setup to use Windows Authentication and 2) the SAP database instance has "additional connection string parameters" to allow Strategy to use SNC authentication (Secure Network Communications) to connect to the warehouse.
Project Source Authentication mode:

Database Instance Connection Settings:

ACTION:
Strategy is investigating the issue and will continue posting updates as soon as they become available.
WORKAROUND:
The defect is specific to when the project source is using Windows Authentication and the database instance is using the additional SNC parameters in conjunction. Changing one of the two will allow the user to open the MDX Cube Catalog without error.
1) Modify the Project Source to use Standard Authentication (or any other form of authentication offered within the Project Source)
or
2) Modify the database instance so that the "additional connection string parameters" are not needed. This will leave the database instance unable to connect to the SAP cubes using Secure Network Communications.
KB414781