BUG: Error When Loading Visual Datatools Add-In

• Microsoft Visual Basic Control Creation, Professional, and Enterprise Editions for Windows, version 5.0

SYMPTOMS

When launching the Visual Datatools Add-in, the following errors may occur:

Object variable or with block not set

Visual Basic can not open the Database Tools project file. Please delete <project>.dsp and try again.

CAUSE

When the MSDN application is launched, it overwrites the LocalServer32 value for the MSDEV.APPLICATION CLSID, which is found at the below registry location. It replaces this value with a path that points to the Infoviewer application (IV5.EXE):

   HKEY_CLASSES_ROOT\ 
    CLSID\ 
     {FB7FDAE2-89B8-11CF-9BE8-00A0C90A632C}\ 
      LocalServer32 

RESOLUTION

WARNING: Using Registry Editor incorrectly or creating your own .reg files can cause serious, system-wide problems that may require you to reinstall Windows to correct them. Microsoft cannot guarantee that any problems resulting from the use of Registry Editor can be solved. Use this tool at your own risk. Change the Registry entry containing the incorrect path back to the correct location of the Developer Studio Shared IDE (MSDEV.EXE) after running MSDN.

The following registry information contained between the asterisks can be modified to contain the correct path to MSDEV.EXE on your machine and then saved to a file with a .reg extension to aid in changing this registry value. After creating the file, double-click on it to launch the Registry Editor, which will merge this information into the Registry.

*************
REGEDIT4

[HKEY_CLASSES_ROOT\CLSID\{FB7FDAE2-89B8-11CF-9BE8-
00A0C90A632C}\LocalServer32]
@="C:\\PROGRAM FILES\\DEVSTUDIO\\SHAREDIDE\\BIN\\MSDEV.EXE"
************* 

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. We are researching this bug and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

Steps to Reproduce Behavior

1. Install and launch the MSDN Library, January 1998 edition. Other previous editions of the MSDN Library may also cause the same behavior.



2. Close the MSDN application



3. Start Visual Basic 5.0.



4. From the Add-Ins menu, select Add-in Manager.



5. Select the Microsoft Datatools Add-in and press OK.
   
   NOTE: Selecting the Microsoft Datatools Add-in may prompt the installation of the Visual Datatools which is located on Visual Basic 5.0 CD-ROM. This will only occur if Developer Studio Shared IDE (MSDEV.EXE) has not previously been installed by either Visual C++ 5.0 or Visual InterDev 1.0. After installing, repeat these steps from the beginning.



6. From the Add-ins menu, select the "Visual Database Tools" Add-in. At this point the two errors described at the beginning of this article may occur. IV5.EXE may show up in the process list although MSDN is not running. This process may be terminated by selecting it in the Task Manager process list and pressing the "End Process" button.
   
   NOTE: This problem might also occur in Visual Basic 6.0 if a version of MSDN older than July 98 is loaded.

Additional query words:

Keywords : kbAddIn kbRegistry kbVBp500 kbVBp600 kbGrpVB kbGrpVBDB
Version : WINDOWS:5.0
Platform : WINDOWS
Issue type : kbbug