Moved the imports from the top of the file into the task function. This seemed to prevent some strange import errors that only occurred on the production server. I don't know if the problems were related to mod_wsgi or Python 2.5 or what.

tinyMCE.addI18n('en.paste_dlg',{
text_title:"Use CTRL+V on your keyboard to paste the text into the window.",
text_linebreaks:"Keep linebreaks",
word_title:"Use CTRL+V on your keyboard to paste the text into the window."
});