Actually execute the unblock-file powershell

Author: Jakob Aarøe Dam

install-server.bat

@@ -5,10 +5,10 @@ set PATH=%PATH%;%windir%\Microsoft.NET\Framework\v4.0.30319
 :: msbuild server/RDSFactor.sln /property:Configuration=release
 
 :: Unblock the downloaded file, otherwise stupid output from InstallUtil
-powershell -Command {Unblock-File -Path server\bin\Release\RDSFactor.exe}
+powershell -Command "& {Unblock-File -Path server\bin\Release\RDSFactor.exe}"
 
 :: install it
 InstallUtil server\bin\Release\RDSFactor.exe
 
 :: start it
-net start RDSFactor
+net start RDSFactor