FIX: "The selected data extension <data extension name> cannot be loaded" error message when you use Report Builder 2.0 to run an SSRS 2008 or SSRS 2008 R2 report that uses a custom data processing extension in server mode

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Microsoft distributes Microsoft SQL Server 2008 or Microsoft SQL Server 2008 R2 fixes as one downloadable file. Because the fixes are cumulative, each new release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2008 or Microsoft SQL Server 2008 fix release.
SYMPTOMS
Consider the following scenario:
  • In Microsoft Report Builder 2.0, you implement a custom data processing extension and then deploy it to Microsoft SQL Server 2008 Reporting Services (SSRS 2008) or Microsoft SQL Server 2008 R2Reporting Services (SSRS 2008 R2).
  • You create a shared data source that uses this custom data processing extension.
  • You configure this shared data source to prompt for user credentials.
  • You create a report that uses this shared data source.
  • You deploy this report to the report server.
  • You run the report in server mode by using Report Builder 2.0.
In this scenario, you receive the following error message:
The selected data extension <data extension name> cannot be loaded. Verify that the selected data extension is correctly registered in RSReportDesigner.config, and is installed on the client for local reports and on the report server for published reports.
RESOLUTION
The fix for this issue was first released in Cumulative Update 8 for SQL Server 2008 Service Pack 1. For more information about this cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
981702 Cumulative update package 8 for SQL Server 2008 Service Pack 1
Note 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 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:
970365 The SQL Server 2008 builds that were released after SQL Server 2008 Service Pack 1 was released
Microsoft SQL Server 2008 hotfixes are created for specific SQL Server service packs. You must apply a SQL Server 2008 Service Pack 1 hotfix to an installation of SQL Server 2008 Service Pack 1. By default, any hotfix that is provided in a SQL Server service pack is included in the next SQL Server service pack.

SQL Server 2008 R2

The fix for this issue was first released in Cumulative Update 3. For more information about how to obtain this cumulative update package for SQL Server 2008 R2, click the following article number to view the article in the Microsoft Knowledge Base:
2261464 Cumulative update package 3 for SQL Server 2008 R2
Note 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 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:
981356 The SQL Server 2008 R2 builds that were released after SQL Server 2008 R2 was released
STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
REFERENCES
For information about the Incremental Servicing Model for SQL Server, click the following article number to view the article in the Microsoft Knowledge Base:
935897 An Incremental Servicing Model is available from the SQL Server team to deliver hotfixes for reported problems
For more information about the naming schema for SQL Server updates, click the following article number to view the article in the Microsoft Knowledge Base:
822499New naming schema for Microsoft SQL Server software update packages
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
report builder 2.0 custom data extension reporting services
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Article ID: 981881 - Last Review: 12/12/2015 03:58:22 - Revision: 2.0

Microsoft SQL Server 2008 Reporting Services, Microsoft SQL Server 2008 R2 Reporting Services

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