Hi,
I've been struggling with a major upgrade scenario for quite a while. I have
an MSI that's already deployed, and I'm building another one to replace the old
version, so I'm making it a "major upgrade" (i.e., same UpgradeCode, different
ProductCode, higher Version #, an Upgrade table, etc.). The new installer has
an entirely different feature and component structure, with different Component
GUIDs and different Feature IDs, so I essentially want to wipe out the old and
one and then install the new one in the same place. One thing to note is that
the old MSI was a .vdproj and the new one is implemented in WiX.
My problem is that when I install the new MSI, it successfully removes the old
product, but it fails to install the new product over it. After the
installation, it even displays the dialog indicating that the installation
completed successfully, but none of the new files are present (even the
containing target directory is still gone from its removal in the uninstall
step).
The Add/Remove Programs list displays an entry for the new product (with the
new version number), but this points to nothing. When I click "Remove" on
that, it indicates (as expected) that there's a problem with the Windows
Installer package.
I've analyzed the verbose logs, but I can't seem to find the point where it
trips up before it installs the new files.
Anyone have any ideas?
Note: I've scheduled the RemoveExistingProducts action between InstallValidate
and InstallInitialize. Also, the new product's installer is implemented in WiX
2.0.
I can include my WiX source or the install log if necessary.
Any insights would be greatly appreciated. Thanks.
~Vishal
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