some mozilla extensions use wizard.xul from the browser chrome to make wizard dialogs.. like setting a new account etc.. the dialogs where you click "next" buttons to proceed to next step. k-meleon doesn't have wizard files in its chrome or locale..so when porting those extensions, you will need to add those xml and dtd(locale) manually.
it's not very crucial though..so far i've only encountered 4 extensions that use that wizard and i failed in converting them properly anyways
it's just a request for the future if someone needs to convert an extension and this extension has the potential to work with kmeleon but needs the wizard; it will make it easier if the files already existed inside km chrome.