Steps to reproduce: - Create a new wiki via ikiwiki --setup /etc/ikiwiki/auto.setup - Test your wiki and the recentchanges page - add the pandoc plugin to the setup file and set correct path to executable (e.g. `/usr/bin/pandoc`) - run `ikiwiki --setup mywiki.setup` again Then the recentchanges page doesn't work anymore. Pandoc version: 1.19.2.1 Ikwiki version: 3.20170622