Hi Julie,
This has been previously reported as an issue with the FCK editor and DNN 4.9. Check out this thread and note Chad's 11/24 post.
Also, can you please go to Host, Module Definition and let me know your exact module version? I do believe this was fixed in DF 2.7.5 so I want to make sure that you have that, at least, if you havent upgraded to 3.0 yet. Thanks!
Candace