Nagios Support Forum

It looks as though you have the handler defined properly in your nsclient.ini file, though it needs to be moved to the external scripts section, the header of this section is:
Depending on how the external script works you may need to add $ARG1$ after the definition as you are passing an argument.

The $ARG1$ was it! Didn't have to move it to [External Scripts].

Thx a million!!!

Great! Thanks for letting us know what resolved this!