Can't open Minimserver

[HardBop]

Unfortunately, I'm unable to launch Minimserver on my PC. I would normally open it via the Minimwatch desktop short cut. However, whilst this normally then opens Minimserver within a few seconds, with the icon turning green, the icon is staying grey. If I try the minimserver desk top short cut the icon remains red with the message "No valid content directory found". Minimserver certainly appears not to be open as I also cannot access via the IP address on the web browser and the it's not showing on my control point (iPad). I have tried turning router, Melco, PC and control point off for 5 minutes but this had no effect.
I do recall this same message a few months ago but cannot now recall how I resolved the problem.
Grateful for any advice. Thanks.