I created a new universal hub application and just compiled it and got the following error. The error points to a link to download an update but the link does not work.
Error 1 File 'Windows.props' not found. See
http://go.microsoft.com/fwlink/?prd=12395&pver=1.0&plcid=0x409&ar=MSDN&sar=PlatformMultiTargeting&o1=WindowsPhoneApp&o2=8.1 for more information. HubApp1.WindowsPhone