Question about sly-inspector-label-face

[rpgoldman]

I'm finding a bunch of these in my *Messages* buffer:

Invalid face reference: sly-inspector-label-face

I can't find that substring in the code. Is it possible that variable name is somehow being created programmatically and that's why I can't find it in the source?

I don't know whether I should be worrying about this or not.

[joaotavora]

This sounds vaguely familiar to me. Try to enable debugging backtraces with M-x toggle-debug-on-error. Else, look for "Invalid face reference" in the Emacs source code and put a (debug) form there, and re-evaluate. This should, in principle, pinpoint the cause of the error message. João