Edit with Notepad++ grayed out

Hello, I have recently started using the Mocha theme applied for my context menu through Nilesoft Shell. It's simply amazing but there's a minor flaw at my end for some reason.

As seen in the Screenshot context menu have Notepad++ disabled for some reason. I've Googled for a fix that suggested me to add the following line to to modify.nss and restart Windows Explorer:
`text modify(find='Notepad' vis='true')`

However when I do that the theme gets disabled for some unknown reason. I'd appreciate some assistance to fix this problem.

I'm on Windows 10 Pro (x64) if it helps. I can provide more details upon request.