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access violation at address 00000000 after installing office 2000

Posted on 2005-03-09
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Last Modified: 2010-04-05
Hi,

A client reports that our delphi application hangs with 'access violation at a address 00000000' when closing down the application. This application worked fine until they installed MS Office 2000 on their citrix network. Doe anyone have a clue where we should start looking for a solution? The app uses an access database for data storage and the client has MDAC 2.7 installed...

Thanks for any help!

Gertjan
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Question by:gertjanvanheijst
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5 Comments
 
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mikelittlewood earned 500 total points
ID: 13496842
Have you got any unclosed connections to the access database across the citrix network?
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by:mikelittlewood
ID: 13496998
Sounds like something has not been FreeAndNil correctly before the application terminates.
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Expert Comment

by:kretzschmar
ID: 13498549
it may also possible, that the installation of the
office has down-/upgraded the mdac installation.

maybe a reinstall of the mdac helps

meikl ;-)
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Expert Comment

by:BlackTigerX
ID: 13498647
I never use FreeAndNil, I don't see why that would be the problem

I would go more for a drivers issue like meikl says... check this out:
http://www.microsoft.com/downloads/details.aspx?FamilyID=8f0a8df6-4a21-4b43-bf53-14332ef092c9&displaylang=en

to find out your MDAC version (as meikl says, it might been messed up with your office installation)
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Author Comment

by:gertjanvanheijst
ID: 13628820
We figured it out I think. We had to unregister 1 ocx (hhctrl.ocx) and1 dll (itrircl.dll).

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