Resharper 7.1 uses a different folder for plugins than 7.0
"C:\Program Files (x86)\JetBrains\ReSharper\v7.1\Bin\Plugins"
Could you update the installer so it installs in the correct place for 7.1?
Or maybe put the resharper plugin in: There are no plugins at the standard plugins location C:\Users\mark\AppData\Local\JetBrains\DotNet\vAny\Plugins because there is no such directory. ?