Hi Guys 

I've already configured the front end server and it is working great but after configuring successfully the database server i get the following error:

Any Ideas on what the problem is?

Found out that issue was due to the app trying to fetch IIS counters when the nodetype was a database 

the class it was trying to fetch was 

Win32_PerfFormattedData_W3SVCW3WPCounterProvider_W3SVCW3WP

so changed the FetchPerfCounterValues action to only call the FetchAppServerValues only if the node type was frontend or controler you were already doing it for FetchProcessValues action