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I've updated my App-V Startup script that I use. The new version includes Event Logging as well as detailed logging, and its in PowerShell finally)
Check out the wiki!
http://social.technet.microsoft.com/wiki/contents/articles/25318.app-v-a-configuration-template-for-deploying-to-stateless-rds-clients-on-citrix-published-desktops-with-citrix-upm-for-profile-management.aspx