Hi Hiko,
According to docops, ExceptionErrorReported is supported only for Java agents.
"A per interval counter based on the number of exceptions being thrown (i.e. uncaught) from the identified method(s). If an exception is thrown, the error message is based on the return value of the getMessage() method called on the exception object. In order to capture the error message, must be used with a WithParameters Directive, otherwise will only increment the Errors Per Interval metric. To see error messages, requires ErrorDetector, otherwise will only increment the Errors Per Interval metric. Requires Agent be at 6.0 or later. Blame is implicit. Supported on Java Agents.
Default Metric Name: Errors Per Interval"
What can be done for .NET agents?
Geethu