Having the same issue in my environment.
Have 25000+ clients installed with 9.3.2 and above. And I´m not very happy to uninstall the full application and then apply again.
Anyone with a solution?
As you have written- "patched the original 9.1 msi up to 9.4, as there was no way I could seemingly get it to apply to my 9.3.4 distribution point...".
So it looks like you are not creating the Reader 9.4 AIP package correctly.
Since Adobe Reader 9.4.0 is a full installer. So there is no need to patch earlier AIPs.
Just create a fresh Adobe Reader 9.4.0 AIP from Adobe Reader 9.4.0 msi directly.
You may Download Reader 9.4.0 msi from http://ardownload.adobe.com/pub/adobe/reader/win/9.x/9.4.0/en_US/AdbeRdr940_en_US.msi
you can extract the msi from the exe available from Reader Download center- http://get.adobe.com/reader
Well for what its worth...
If you get the standalone package from the Adobe ftp site...
You can seemingly roll this over top of 9.x... So while it isn't as elegant as an incremental patch, this uninstalls old versions and installs 9.4.0 straight up.... Will likely take awhile, or at least longer that an incremental but at least blessedly this is already in .msi format, and doesn't require and manual uninstalls, command-line-fu, or scripting to force an overwrite.
So a decent resolution with only slight pain and discomfort.. ;-)
Off to do some test GPO deployments now to ensure I am not just pipedreaming...
If you're pushing the install via GPO or SCCM and having problems, check your event logs. I ran into these messages when trying to use the MUI from the "official" patch page:
Product: Adobe Reader 9.1 MUI -- Setup has detected that you already have a more functional product installed. Setup will now terminate.
Confirmed that I was using the 9.4.0 files, so clearly something didn't get updated by Adobe on the versioning.
Once I grabbed the exe off the FTP, pulled out the install files, updated our mst mods, updated packages, and pushed via SCCM, the update worked fine.
This also begs the question why Reader needs what amounts to a reinstall as opposed to Acrobat getting just an MSP this time around. I'd love to know.