Hi there guys
I've ran into an issue now where a patch we've built applies without fault, but doesn't actually make any changes except to the ARP entries.
I would've abandoned the patch and gone to look at the project file, but I've managed to install the patch correctly if I install it like this (as part of a first-time install):
msiexec /i myapp.msi /qb PATCH="%pathToMsp%"
Any ideas?