I then updated the AIP according to the instructions found here, applying both the 8.1.0 then the 8.1.1 patches Then I copied setup.exe, setup.ini & my MST file into the new, updated AIP, & changed the settings accordingly I now have two directories on the network: one for the original package that came off of the 8.0 CD plus its MST, and another for the updated AIP with its MST. I keep the original because of updating issues I'd experienced with 7.x in the past. I can run setup over the network unattended using a batch file no prob. I've done all this and it does work, but the package has grown from 400MB to 800MB, being that I'm pushing this out to 350 users Im trying to keep this as small as possible. Is there a way to recreate the Data1.cab file and allow the msi to read it ok, instead of having this uncompressed AIP. I recreated the cab using makecab but the msi cant find the files within the cab so fails. Any help appreciated. (using Acrobat 8 Pro)