I just installed CBB 3.08 on XOOPS 2.0.16 along with the Frameworks and class/xoopseditor packages as described on the support page, but I don't see where you "turn on" the different WYSIWYG editors to be used by users. When I post something I only get the options of DHTML and text and there is nothing in the CBB module's preferences regarding selecting editors, although I know it used to be there in older versions. What am I missing here?

maybe you should check "allow html" in every forum you want to use wysiwyg editor

That was most certainly it. Thanks!