FIX: VB5.EXE Application Error with UserControls in Project

ID: Q189499

The information in this article applies to:

Microsoft Visual Basic Learning, Professional, and Enterprise Editions for Windows, version 5.0

SYMPTOMS

Large projects or project groups that contain UserControls that are not compiled OCXs may experience the following application error:

The instruction at "0x0fbb54bb" referenced memory at "0x00000000". The memory could not be "read".

This behavior occurs when either compiling the project or opening a form that may contain a UserControl.

CAUSE

The UserControls contain either references to global objects or circular references to Forms/Modules within the project.

RESOLUTION

There are three possible resolutions to this issue:

Select Options from the Tools menu, select the General tab, and then deselect Background Compile.

Use compiled OCXs in the project instead of having a UserControl project as part of the Project Group.

Late bind global object references within UserControls and attach them to instances at run-time.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been corrected in Visual Basic version 6.0.

Additional query words: kbDSupport kbCrtl kbVBp500bug kbdss kbVBp kbVBp600fix

Keywords : kbGrpVB
Version : WINDOWS:5.0
Platform : WINDOWS
Issue type : kbbug