[pkscout]

does Artistslideshow NOT recognize caps in extensions?

Please don't post log snippets in forum posts.  In the future post a link to the full log as per forum rules.

That said, it appears AS does not support uppercase extensions.  It's been this way for like three and a half years, and you're the first one to notice.  Or at least notice and say anything about it.  AS gets the list of image extensions from Kodi, and they are all in lowercase.  It looks like an easy fix to support uppercase extensions, but it'll be a few days for me to get the fix in and approved.  In the meantime, if you are up for modifying one line of code, you can edit the following file:

addons/script.artistslideshow/resources/lib/artistslideshow.py

On line 119 replace the line that says:

python:
if path.endswith(self.VALIDIMAGETYPES):

with:

python:
if path.lower().endswith(self.VALIDIMAGETYPES):