Assume that you apply Cumulative Update 12 for Microsoft SQL Server 2008 R2 Service Pack 1 (SP1), or Cumulative Update 5 for SQL Server 2008 R2 SP2. When you use Microsoft SQL Server 2008 Analysis Services (SSAS 2008) to perform some operations, exceptions may occur, and SSAS may crash.
Cumulative update information
Cumulative Update 8 for SQL Server 2008 R2 Service Pack 2The fix for this issue was first released in Cumulative Update 8. For more information about how to obtain this cumulative update package for SQL Server 2008 R2 Service Pack 2, click the following article number to view the article in the Microsoft Knowledge Base:
2871401 Cumulative update package 8 for SQL Server 2008 R2 Service Pack 2Note Because the builds are cumulative, each new fix release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2008 R2 Service Pack 2 fix release. We recommend that you consider applying the most recent fix release that contains this hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2730301 The SQL Server 2008 R2 builds that were released after SQL Server 2008 R2 Service Pack 2 was released
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.