FCK doesnt loads in

Hi I was working with FCK editor and everything was great, no problem. Today I FCK doesnt want to load in? Do you know maybe why?

When Im working in Firefox Im getting this error:

FCKeditor is not defined
setFieldName2("field_id_23")index.php (line 1833)
onclick(click clientX=28, clientY=725)index.php (line 1)
[Break on this error] {var oFCKeditor = new FCKeditor(textAreaName);

Thank you for any suggestions By mistake I posted this on “How To” where here would be proper location..sorry abut this