NBench Exception: %Performance Counter% is not registered on this machine. Please Create it First.

[adybka]

I am trying to incorporate windows performance counters into NBench benchmarking. When I try to use the PerformanceCounterMeasurement attribute with almost any perfomance counter I get the nbench exception "%Performance Counter% is not registered on this machine. Please Create it First." I have looking everywhere for example of performance counters being used or the source code for NBench.PerformanceCounter. [PerformanceCounterMeasurement("Processor", "% Processor Time")] This is the line i am using to include the measurement attribute. If there is a known solution or source code/api I could look at, that would be great!