PRB: Cannot Add Windows Common Controls or Common Dialog Control to Project

IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

Visual Basic 6.0 and Visual Basic 5.0 are both installed on the same system. After uninstalling Visual Basic 6.0, the following error appears when you attempt to add the Windows Common Controls or the Common Dialog control to a Visual Basic 5.0 project:

The registry contains a reference to a control version that was removed by uninstalling Visual Basic 6.0.

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

Delete the registry key for the problem control from: and re-register it. For additional information about deleting and re-registering an ActiveX control, please refer to the following article in the Microsoft Knowledge Base:

The following are the Class ID numbers for the controls known to be affected by this problem:

ActiveX Control	File Name	Class ID
Windows Common Controls	comctl32.ocx	6B7E6392-850A-101B-AFC0-4210102A8DA7
Common Dialog Control	comdlg32.ocx	F9043C88-F6F2-101A-A3C9-08002B2F49FB

When you locate the Class ID folder for these controls in the registry, the folder will contain a version folder. This version folder contains the version entries for these controls.

Installing multiple versions of the same ActiveX control results in multiple entries in the version folder. Deleting the ActiveX folder from the registry and then registering the control will add the correct entries to the registry.