We are looking to move to using the -Patch functionality rather than file replacement to upgrade our portable install. We are currently using a .msi installer wrapped in an executable with .msp patch files. For some reason the virtualized patch install is giving me the following error:
I have tried running the command with an elevated command prompt and setting full permissions for AppData and C:\Windows\Temp (we use this), so I'm just wondering if there's anything I'm missing or if there's any way to get some diagnostic information during this process. The call to msiexec seems to be handled by Cameyo so I'm not sure how to retrieve the installation log.
