So… I was editing config.js to cut down the option from the default Sakai toolbar configuration for a Sakai build (which makes a huge diffence in being able to see stuff in the richTextAreas).
I got burned for a while (well, 10 minutes anyway) due to Firefox and some aggressive JS caching. Did a bunch of mvn deploys before I realized that was the problem.
Installed the Clear Cache Button which helped enormously.
Many thanks to Google, the FCKEditor docs, and the blogger who shared his pain (before me) about getting stuck due to Firefox’s caching.