I've installed the comments module for my SS 3.0 blog and it's working.
But I want to override the CommentsInterface.ss template and I can't figure out where to put the overriding file. I've tried in themes/mytheme/template and themes/mytheme/templates/Includes and neither seem to work.
This should not be hard, so I must be missing something easy.
With some guidance on Stack Overflow (http://stackoverflow.com/questions/18600668/overriding-silverstripe-3-commentsinterface-ss), I put the CommentsInterface.ss template in /themes/mytheme/templates/ and ran www.mysite.com/?flush=all. But that still didn't force the system to use my version of the template.