I upgrade a Plone site from 4.2 to 4.3. The upgrade steps are basically:
running install.sh to have a 4.3 environment
copy Data.fs to var/filestorage and custom dexterity package to src
running upgrade in ZMI
Everything seems fine. But when I add/edit Page items, TinyMCE toolbar is missing for the body field. Only showing a Text Format dropdown. Note: I do see the toolbar trying to render (first 2 icons appear), but fail and disappear.
What am I missing? Any hints?