Am trying to send out a Sp for Viso via Zen. Here's what I've done:

- created Admin install for Visio
- patched Admin install with Visio SP2 (MSP file)
- created Zen job to distribute using MSI file

App caches OK, but it's not updating local install to SP2. We have
many non-SP installs and would like to use this to upgrade, as well as
for new installs.

When using Zen job for new install, it does install the SP2 version.

It's like to the original install is not getting overwritten correctly
(if at all).

Any ideas?