What is the OS to which you are pushing, and have you successfully pushed to that OS before?
Windows 2008 Server disables interactive services by default. This Microsoft page discusses the "The %1 service is marked as an interactive service. However, the system is configured to not allow interactive services. This service may not function properly." message.
I don't know if this is relevant, but are you using silent, unattended or interactive for the installation settings?
Exporting client installation packages
http://www.symantec.com/docs/HOWTO81164
Note: On those computers that run the 64-bit versions of Microsoft Windows operating systems, you deploy the client installation packages with the silent or the unattended option. These 64-bit operating systems include Windows Vista, Windows 7, Windows 8, Windows Server 2008 (including R2), and Windows Server 2012. Only use the silent option for the packages that you deploy to computers running the 32-bit versions of Windows Vista, Windows 7, Windows 8, and Windows Server 2008. When you use a silent deployment, you must restart the applications that plug into Symantec Endpoint Protection, such as Microsoft Outlook and Lotus Notes.
sandra