I've seen a few posts on related issues, but just can't find an answer to my situation.
When NextGEN is activated, the visual editor breaks. The Visual and Code tabs show but do not work. When NextGen is unactivated, the editor returns.
Our host offer version WP 2.1 but I suppose that some settings may not be correct. They are very responsive, but I'm not sure what to request. I've got NextGen 0.96. It is my first and only install.