I'm using JoomlArt's JA Nex 2.5 template on a Joomla 2.5.4 site. After installing K2, the JA megamenu stops showing the extended menu options. I understand that the mega menu is Javascript based. When I disable the K2 System extension, the mega menu works again. Any suggestions?

Just a quick update. The extended menu in the JoomlArt template works properly if I disable its Javascript optimisation function. Disabling Javascript compression alone didn't do the trick, but after disabling joining/combining of Javascripts as well, the menu no longer conflicts with the K2 system plugin.