PRB: VB 4.0 16-Bit Add-Ins Fail After Installing VB 6.0

• Microsoft Visual Basic Learning, Professional, and Enterprise Editions for Windows, version 6.0

SYMPTOMS

After installing Visual Basic 6.0 you will receive the following error when using Visual Basic 4.0 16-bit:

<Add-In Module> could not be loaded. Remove it from the list of available Add-Ins?

CAUSE

Visual Basic 6.0 changes some of the registry settings that Visual Basic 4.0 16-bit uses.

RESOLUTION

Update the Windows Registry to enable Visual Basic 6.0 and Visual Basic 4.0 16-bit to work together on the same development system.

WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

For information about how to edit the registry, view the "Changing Keys And Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it. If you are running Windows NT, you should also update your Emergency Repair Disk (ERD).

Step-by-Step Example

1. Copy and paste the below text into a text file:

   REGEDIT4
   
   [HKEY_CLASSES_ROOT\TypeLib\{EF404E00-EDA6-101A-8DAF-00DD010F7EBB}\99.0]
   
   [HKEY_CLASSES_ROOT\TypeLib\{EF404E00-EDA6-101A-8DAF- 00DD010F7EBB}\99.0\0]
   
   [HKEY_CLASSES_ROOT\TypeLib\{EF404E00-EDA6-101A-8DAF- 00DD010F7EBB}\99.0\0\win16] @="C:\\VB\\vbext.olb"
   
   




2. Modify the "C:\\VB\\vbext.olb" line above to point to the location where Visual Basic 4.0 16-bit was installed on your system.
   
   NOTE: Make sure to press ENTER on the last line of the text file before saving in the next step, or Regedit may not enter the last registry entry above during step 4.



3. Save the file as Vb4.reg.



4. Launch Windows Explorer, and double-click the Vb4.reg file. This process updates the system registry.



5. Launch Visual Basic 4.0 16-bit. The Add-Ins now work correctly.

STATUS

This behavior is by design.

MORE INFORMATION

You receive the error message listed above in one of two ways within the Visual Basic 4.0 16-bit environment:

• When you launch Visual Basic 4.0 16-bit, and you have at least 1 Add-In selected to load.



• When you attempt to add an Add-In module to Visual Basic 4.0 through the Add-In Manager.

Additional query words: kbDSupport kbdss kbvbp600 kbVBp kbRegistry kbAddIn kbVBp400

Keywords : kbGrpVB
Version : WINDOWS:6.0
Platform : WINDOWS
Issue type : kbprb