Layout "item_warnings" not found errpr 500

hi, we renamed some layouts, probably we forgot to change that
We'll fix that asap.

However, you should use the latest version of joomla 1.5, since the Mootools upgrade plugin is required.
Since it's the only warning, once you fix that you should be able to use the extension without any problem.

since there is an extensive use of javascript, try reloading the frame opened by JCE (if you use firefox: right click->This frame->reload this frame.

However, do you have any plugin installed or it's a fresh install?
sometimes plugins extends the standard javascript errors and you can have some problems (please note fabbricabinaria.it/component/kunena/j4sc...?limit=6&start=6#202 )