Help! I just upgraded from 1.5.10 to 1.5.14, and now the tinymce is screwed up. See the forum discussion below--Gotmian describes the same problem I'm having.
Tinymce v 2.0 is my default editor in the global config. I uninstalled JCE thinking maybe that's what was causing the problem, but it didn't help.
Before upgrading from v1.5.13 or lower to 1.5.13 or higher, users should be warned that a bug in the new version can disable the Add and Apply functionality of TinyMCE. At this time, the only potential "solution" is to install v1.5.14 from scratch.