Thanks nguyen - that seems to have done the trick - changing the fckconfig.js in BOTH folders. (And your site is cool even if my vietnamese is not ;)
For me this issue seemed to get ugly after I upgraded the site from 3.22 to 4.7 - on all my sites that I upgraded.
Ismet is right, this should be easier to deal with.
For most of us, FCK is the rubber meeting the road as far as client interaction with their site - critical that it works as they want it to.
thanks,
Will