fullPath = System.IO.Path]::Combine($RoleInstallPath, "bin\Microsoft.Exchange.Management.Mobility.dll"); precompile-ManagedBinary ...

$fullPath = [System.IO.Path]::Combine($RoleInstallPath, "bin\Microsoft.Exchange.Management.Mobility.dll");          precompile-ManagedBinary -BinaryName  $fullPath -Action uninstall;