KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q142192: PRB: Abnormal Termination When Instantiate Object from VCX

Article: Q142192
Product(s): Microsoft FoxPro
Version(s): 3.00 3.00b 5.00
Operating System(s): 
Keyword(s): 
Last Modified: 21-AUG-1999

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b, 5.0, 6.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

After instantiating an object from a corrupt .vcx file, Visual FoxPro may stop
responding and return to Program Manager in Windows 3.x and Windows for
Workgroups 3.x. Under Windows 95 and Windows NT, the following error messages
are displayed respectively:

Windows 95:

  This program has performed an illegal operation and will be shut down. If the
  problem persists, contact the program vendor.

Windows NT:

  An application error has occurred and an application error log is being
  generated. VFP.exe Exception: access violation

CAUSE
=====

The Visual Class Library Files (.vcx and .vct files) may be corrupt.

RESOLUTION
==========

Replace or recreate the corrupted Visual Class Library files.

STATUS
======

Microsoft is researching this behavior and will post new information here in the
Microsoft Knowledge Base as it becomes available.

MORE INFORMATION
================

Steps to Reproduce Behavior
---------------------------

1. Set CLASSLIB to CorruptVCX.

2. Assign oObject to CREATEOBJECT("ClassName").

-or-

1. Create a new form.

2. Click the View Classes tool, and choose Add.

3. Select the CorruptVCX.

4. Add an object from the CorruptVCX to the form.

Additional query words: VFoxWin bad

======================================================================
Keywords          :  
Technology        : kbVFPsearch kbAudDeveloper kbVFP300 kbVFP300b kbVFP500 kbVFP600
Version           : 3.00 3.00b 5.00

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.