For the Froggr Firefox Extension to work with K-Meleon 74.0 and K-Meleon 75.0, download Froggr 1.0.1-signed
https://addons.cdn.mozilla.net/user-media/addons/2165/froggr-1.0-fx.xpi and rename it to {0711a72d-2bfc-4f2d-9366-454934df3105}.xpi
Next copy {0711a72d-2bfc-4f2d-9366-454934df3105}.xpi into the extensiosn folder.
Then download Frogger
http://kmext.sourceforge.net/extensions/frogger.7z under Miscellaneous Extensions
http://kmext.sourceforge.net/ext8.htm on K-Meleon Extensions Central.
Last extract macros from Frogger
http://kmext.sourceforge.net/extensions/frogger.7z into the K-Meleon Root Folder.