Article ID: 288910 - View products that this article applies to.
This article was previously published under Q288910
When you try to open a Data Transformation Services (DTS) package in the Enterprise Manager DTS Designer, you may receive the following error message:
If you try to open the package in SQL Server 2000, you may also receive the following error message:
Error Source: Microsoft Data Transformation Services (DTS) Package
Error Description: Invalid class string.
The selected package cannot be opened. The DTS Designer has been closed.
This error message occurs when the class identifier for a DTS task has not been registered properly with Windows. Because DTS tasks are registered with Windows using a COM class ID (CLSID), if that identifier is not present, a package that includes these unregistered tasks will not open. This error may occur in the following situations (note that this is not an exhaustive list):
The solution to this problem depends on the type of tasks that are present in the DTS package. Because these tasks (and their associated class IDs) must be registered with the operating system, this problem is usually alleviated by an installation of the components in question:
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