Quote
George Hall
For MarkDown Editor Firefox Extension to work with K-Meleon 74.0 and K-Meleon 75.0 Beta 1, download MarkDown Editor https://addons.cdn.mozilla.net/user-media/addons/397064/markdown_editor-0.5.2-fx.xpi and rename it to markdowneditor@ondrejd.info.xpi
Theb download MarkDown Editor http://kmext.sourceforge.net/km74/markdowneditor-km74.7z for K-Meleon 74 and extract macros to the k-Meleon Root Folder.