nickbowman on "[Plugin: WP-AMD - Global JS and CSS handling] Crash wordpress permanent links"

your plugin is crashing the wordpress permanent links, after much testing plugin for plugin to see what was that was breaking wordpress, I found that your plugin. WP-AMD - Global JS and CSS handling

It removed all rewrite rules, making subpages retu 404s. See my fix here: https://wordpress.org/support/topic/45-fix?replies=1