The upgrade notes has the following statement: "WMI Service" Sensors Might Not Work
If you're currently using the WMI Service Sensor to monitor machines running on Windows 2008 R2, those sensors might not work any more after updating to version 12. They might show the following error message: Class(es) not found: "Win32_PerfRawData_PerfProc_Process"
Customers reported this error only when monitoring systems running on Windows 2008 R2. We're currently working on a fix for this.
Is this still an issue or has it been fixed?