I've got an issue where the installer gives an error when I refer to an ID for a file that wasn't
installed, even though it actually is.
I have a file called dbsview.exe, and the file ID is the same. I'm trying to launch it at the end
with a Custom Action using the file ID. When I do this I get a 2753 error reporting that this file
was not marked for installation. I've created a full log of the installation and attached it. I've
added a second extension because some mailing lists have issues with zip files. The error appears
at line 14839. However, the file is actually installed. The version number of the file on disk
changes as expected, and you can see that Windows Installer reports that the file will be installed
on line 13772.
I'm trying to allow 4th digit upgrades, so I have scheduled RemoveExistingProducts to before
CostInitialize. I realise that this has issues with rollback, and that although 3rd digit
downgrades are still caught by the Upgrade table, 4th digit downgrades aren't. This is actually the
case that is failing. I'm downgrading from 2.0.47.4 to 2.0.47.3. Everything goes exactly as it
should, except for when I try to use the file ID in a Custom Action.
A while back I became aware of an issue in Windows Installer where the path for a file wouldn't be
available via it's ID if the file wasn't actually to be installed. This was discovered in a similar
Custom Action that was used to launch an executable that hadn't changed and so was not marked for
installation. The work around was to use a property and set it to a directory with the file name
hard-coded onto the end. I guess I can do the same here, but I'd like to understand whats going wrong.
Any help would be appreciated.
Rob
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