Hi everybody,
I'm building a package with Wise Package Studio 7, from a legacy setup. It's about a old software and it has Mdac 2.7 included, I've compiled and installed this package on a test computer. The application is working perfectly, but there is a problem with another things that have to be together on the same PC, such as vbscript using ADO. I think the problem is caused by Mdac 2.7 installation, because originally the computer has Mdac 2.8.
So, do you know how to skip or delete Mdac 2.7 installation? I've tried to install Mdac 2.8 after Mdac 2.7 installation, but I've found an error message "This setup doesn't support installing on this operating system"
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It is probably a custom action. You should start by looking in the InstallExecuteSequence table.

Without looking it up, I don't think MDAC can be forced to downgrade. There are a number of good articles (wikipedia has one I think) on MDAC that will tell you what to look for in the different versions and what comes with which OS/SP.
Answered 07/05/2011 by: jmaclaurin
Third Degree Blue Belt

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A tactic which has worked for me with idiot installers like this is to:

- Uninstall MDAC 2.8
- Install MDAC 2.7
- Re-install MDAC 2.8

The remnants of the 2.7 install should be enough to satisfy the installer that 2.7 is (or, at least, was) installed and it will skip re-installing.
Answered 07/05/2011 by: VBScab
Red Belt

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Very good idea! I'll try to do that
Answered 07/05/2011 by: cmi2000
Senior Purple Belt

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Answer this question or Comment on this question for clarity