just and update on this, the installs that these comptuers have were full installs and then they are updated as needed. they don't come from an admin install.
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msiexec /quiet /norestart /l*vx "\Reader.log" /p "AdbeRdrUpd912_all_incr.msp"
Let me know if you require something different.
Michael thanks much for the info
the patches are being pushed out.
Download and install Windows Installer 4.5, and everthing will be fine.