Symptoms
Assume that you use a Multidimensional Expressions (MDX) calculation in Microsoft SQL Server 2012 Analysis Services (SSAS 2012). Some calculation members are defined with non-existent tuples. When you run this MDX calculation, you receive an unexpected exception. Additionally, an access violation occurs.
To work around this issue, add a format string (FORMAT_STRING="").
Resolution
The issue was first fixed in the following cumulative update of SQL Server.
Cumulative Update 1 for SQL Server 2012 SP2 /en-us/help/2976982
Cumulative Update 10 for SQL Server 2012 SP1 /en-us/help/2954099
About cumulative updates for SQL Server
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.