In menu Tools -> Privacy
As siria said, check that you aren't block images. (unmarked)
Check you aren't block JavaScript. (unmarked)
Check the rest of the items in blocked section.
Check you aren't using Adblock, Preferences F2 -> Page Display -> Content Filters -> CSS Adblocking, and unmark "Enable CSS Ad-Blocking" option.
Also you can tried to change User Agent string, Tools -> User Agent.
What K-Meleon version and windows are you using?
Are you tried K-Meleon 1.6a4?
K-Meleon in Spanish