Check the /ULXXXX if the XXXX.mst exist in the source directory. When the file not exist the setup will fail.
Followed this procedure but failed to install. Running .MSI results in message "Run setup from root folder". Spent one hour trying to get support from Adobe. Could barely understand what passes for English with them. Finally told Silent install required a $50 free, despite our CLP membership and volume license purchase.If this procedure doesn't work, don't waste time trying to get support from Adobe, they don't care. Finally had to hand load crapplication.
The Premiere update 8.0.1 can be installed silent. Extract the update from the zip file and run the executable with -silent as parameter.
See Instructions Here:
http://helpx.adobe.com/premiere-elements/kb/silent-install-instructions-premiere-elements-1.html
Biggest thing to note, when you run the silent install, you need to launch OEM.exe not Setup.exe with your specified parameters.
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