We’re running an academic Windows environment.
What I found was it’s much easier to deploy the MSI (we use SCCM) in a Windows environment, as you’d imagine, using the following parameters:
msiexec.exe /q ALLUSERS=2 /m MSIKMVSD /i “SketchUp2014.msi”
Also the file needing to be distributed via GPO is not server.dat, in this case, It’s SketchUp14.lf.
Hope that helps.