UI not showing up for CCK fields

Just installed WYMeditor on Drupal 5.9 and am running jQuery 1.2.6.

I'm seeing the UI appear on the Page and Story types but not for my content type using CCK fields even though the input format is showing up as selected (see screenshot).

So I saw this thread
http://drupal.org/node/269736
which looked promising and I modified the code but it doesn't make any difference.

Was a bit confused with the line quoted to replace
drupal_add_js(array('wymeditor_key' => $key, 'wymeditor_path' => drupal_get_path('module', 'wymeditor')), 'setting');

which doesn't seem to exist in wymeditor.module, but this line does

drupal_add_js(array('wymeditor_key' => $key, 'wymeditor_path' => url(drupal_get_path('module', 'wymeditor'))),'setting');

or am I looking in the wrong place?