[wix-users] MSI Not showing up in Installed Files

[Justin Cox]

I have a weird issue.  I have a web app, with an MSI I build using WiX.

Recently, and just on one VM, the installer will no longer upgrade.
Looking in the install logs, it's not removing the existing product,
because it doesn't believe the existing product exists.

I cannot uninstall the product, downgrade, or upgrade - just on this one
VM.  The installers run in every mode, returning success, but the manifests
show that none of the files are going to be overwritten (They are all
non-versioned - this is a web-app, so we need to allow downgrades).

If I run the MSI after an installation, it does go to the
Repair/Modify/Uninstall Screen.  I think my issues start with
"FindRelatedProducts"

Normally, it looks like:
Action start 0:52:29: FindRelatedProducts.
FindRelatedProducts: Found application:
{41541D5F-25F4-4A5D-8A89-85CFBF804A2A}
MSI (c) (E8:C4) [00:52:29:630]: PROPERTY CHANGE: Adding
WIX_UPGRADE_DETECTED property. Its value is
'{41541D5F-25F4-4A5D-8A89-85CFBF804A2A}'.
MSI (c) (E8:C4) [00:52:29:630]: PROPERTY CHANGE: Adding MIGRATE property.
Its value is '{41541D5F-25F4-4A5D-8A89-85CFBF804A2A}'.
Action ended 0:52:29: FindRelatedProducts. Return value 1.

This looks like:
Action start 20:01:40: FindRelatedProducts.
MSI (c) (1C:10) [20:01:40:882]: FindRelatedProducts: could not read
ASSIGNMENTTYPE info for product '{A42118F4-0CEA-4D30-BF8B-46BD41A1AA75}'.
Skipping...
FindRelatedProducts: Found application:
{754C321A-4B15-4382-A380-1A9C9B5BBF3A}
MSI (c) (1C:10) [20:01:40:882]: PROPERTY CHANGE: Adding
WIX_UPGRADE_DETECTED property. Its value is
'{754C321A-4B15-4382-A380-1A9C9B5BBF3A}'.
MSI (c) (1C:10) [20:01:40:882]: PROPERTY CHANGE: Adding MIGRATE property.
Its value is '{754C321A-4B15-4382-A380-1A9C9B5BBF3A}'.
Action ended 20:01:40: FindRelatedProducts.

 1.

Not sure what ASSIGNMENTTYPE is, but this issue has me baffled.

Is there a better way to diagnose the issues?

Thank you!