FIX: You may receive an error message when you try to run an SSIS package in SQL Server 2005

This article describes the following about this hotfix release:

• The issues that are fixed by this hotfix package
• The prerequisites for installing the hotfix package
• Whether you must restart the computer after you install the hotfix package
• Whether the hotfix package is replaced by any other hotfix package
• Whether you must make any registry changes
• The files that are contained in the hotfix package

If you try to run a Microsoft SQL Server 2005 Integration Services (SSIS) package, you may receive an error message that resembles one of the following error messages:The error messages may be reported in several locations:

• When you try to run an SSIS package by using the dtexec command-prompt utility, the error message may be reported in the console window of the command line.
• When you try to run an SSIS package by using SQL Server Business Intelligence Development Studio, the error message may be reported in the Business Intelligence Development Studio output window.
• When you try to run an SSIS package and you use a log provider to redirect the execution output, the error message is reported in the redirected output.

This problem occurs when the following conditions are true:

• Several tasks in an SSIS package are run in parallel.
• The SSIS package uses property expressions that contain variables.

When several property expressions use the same variable and the property expressions are evaluated in parallel, more than one property expression may access a single variable at the same time. When more than one property expression accesses a single variable at the same time, this problem occurs.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must have SQL Server 2005 installed on the computer.

Restart information

You do not have to restart the computer after you apply this hotfix.

Registry information

You do not have to change the registry.

Hotfix file information

This hotfix contains only those files that are required to correct the issues that this article lists. This hotfix may not contain all the files that you must have to fully update a product to the latest build.

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

SQL Server 2005 32-bit versions

SQL Server 2005 x64 edition

SQL Server 2005 Itanium-based versions

Note Because of file dependencies, the most recent hotfix or feature that contains these files may also contain additional files. This hotfix is not included in SQL Server 2005 Service Pack 1. This hotfix is included in the cumulative hotfix package (build 2153) for SQL Server 2005. You must have SQL Server 2005 Service Pack 1 installed on the computer if you want to apply the cumulative hotfix package (build 2153). For more information, click the following article number to view the article in the Microsoft Knowledge Base:

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

For more information, click the following article number to view the article in the Microsoft Knowledge Base: For more information about how to use property expressions in packages, visit the following Microsoft Developer Network (MSDN) Web site: