Hi & thanks for your response.
I'm monitoring print services CPSVC & Windows spooler.
The template is fine as far as I can tell (as proven by the fact it works on the 9 other servers it's associated to). I'm just struggling to understand what, on the one server, is causing the issue where I get the error message mentioned...
Like I say, I don't think that this is an issue with the Solarwinds software, I just hoped that someone else had come across a similar issue & resolved it (& they want to tell me what they did).