fluxbox-generate_menu doesn't find icons in release 1.0rc3 Something seems to be wrong with the icon paths. I had to add one line from the old paths.
Created attachment 117648 [details, diff] diff -u for fluxbox-generate_menu
Thanks to your bug report, this has been fixed in upstream's SVN, and I have added upstream's patch to fluxbox-1.0_rc3-r2