I have a similar problem. fck texteditor, when placed on my user control. it worked for a while, and after adding three more, then removing one. they all stopped working. i would like to get four working on the same ascx page (my module settings ). right now, I'd be happy if only one worked.
It seems not to transfer what was typed in, client-side, to the server .Text property. I'm at the point, where if I cannot find a solution soon, I am going to replace fck editor with something else.