Automation error in VB

I hope someone can help me. I created an activeX control which
contains 2 forms and some routines for managing the forms. I've
compiled the activeX control on my computer and everything works fine in
my exe program which calls the activeX control. The problem is when I
create a setup program and install the activeX control to another
computer with the setup program. On the computer I installed the
control to, when I try and access the activeX control in my vb programs
I get "runtime error 440 - automation error". Now I can place the control on my form,
but I can't call any functions of the control. When I do I receive the automation error message.
Anyone know why the control would work fine on my development system,
but give the above error after being installed on another computer with
the setup program?
Thanks!

[Tim]

Check that you have installed DCOM98 and MDAC on the other computer. DCOM98 must be installed manually it is not included into PDW.


This problem happens when you use an ActiveX control in your program and the ActiveX control is not
registered in the registry. If it works on the Development PC, it must be an incompatibillity between your
control and the same control installed in the user PC. To fix this check which ActiveX controls you need in
order to run your program and make sure all of them are placed in the SYSTEM folder. You should know which
control is the one that's giving you so much trouble (it must be in the Form that crashes your program) so
you'll have to manually register it. To do it you have two basic choices: Do it through Windows Explorer or
through a DOS Prompt Window. If you are using the Explorer just drag and drop your
control into REGSVR32.EXE (Both must be in the SYSTEM folder) or
in the Dos Prompt window be sure you are in the SYSTEM folder
and tye REGSVR32 [YourControlName].OCX After doing this you
should see a message box saying that the registration process
succeeded. If it fails, then you will have to dig inside the
registry and find all the keys that references the control to
delete them. Then you'll have to repeat the registration
process.

Here's another clue:
You are refrencing an ado library that is the latest and geratest on your machine but when you try
to package the exe PDW by dafault picks up from its own repository of redistribution components which
normally has a version which is older.
So what happens the PDW picks up the ADO library all right automatically based on the Reference setting in
your project but it picks up the older version.
If this is the case then
For this replace the Mdac_typ.exe in the
C:\Program Files\Microsoft Visual Studio\VB98\Wizards\PDWizard\Redist with the latest Mdac_typ.exe


Iouri Boutchkine
[email protected]

Thanks for the detailed response! I finally gave up and copied the ActiveX source and forms into my main program. This fixed the problem :-). I do have another ActiveX control in the project which does transport fine to the other computer. So there must be something funky in my ActiveX control which I'm missing; but I don't have the energy now to look into it.
Thanks again for the quick response.

[Tim]