Foren / Cotonti / Support / No MarkItUP! or BB working on Cotonti Siena 0.9.4

Siena comes with jQuery 1.6 onboard so it conflicts your 1.4.2. You should look for errors in your browser's JavaScript error console to see what's wrong with the slider.

Also check page source in the browser to see if JS is present in place of {FOOTER_RC}.

Another thing: if you edit "welcome" page in blank install it is always a white textarea because that page has "none" parser selected (see {PAGEEDIT_FORM_PARSER} tag).