first, please check the Error Console from the Tools menu if you can see
any particular error messages there either during startup of Firefox or
when accessing Moji Options.
also check the preferences, i.e. enter URL about:config and then enter
"moji" into the filter. Check if your dictionaries appear under
moji.dicts and moji.kanjidicts
If you don't have many other extensions installed in Firefox you could
try to remove all extensions and extensions settings to see if this
fixes it. You would navigate with Explorer into your Profile folder
http://kb.mozillazine.org/Profile_folder#Where_is_my_profile_folder.3F
and then delete all files beginning with extensions as well as the
extensions folder. After that all extensions should be gone from the
Add-On manager. Then reinstall all extensions again.
Make a full backup copy of your profile folder before trying that.
As alternative you could use the Profile Manager
http://kb.mozillazine.org/Profile_Manager
to create a new profile and install moji there to see if it works in a
fresh profile.
Cheers,
Gerald
it is unclear to me whether the dictionaries which you have installed
successfully work normally or not. Are you able to look up words from
the words dictionaries and kanji from the kanji dictionaries?
If the only problem is the chinese-english dictionary I would recommend
to try another download. Sometimes the download gets interrupted or you
get a mirror site which has a corrupted file.
The correct file for Chinese-English is mojicnen-0.6.20071013.xpi
It should have exactly 1040369 bytes.
Cheers,
Gerald