I wrote a "Hello World" zimlet according to the wiki, modified it replacing "Hello World" with Asian characters in UTF-8 and tried to deploy it using the admin UI, but I got the following error:

Failed to deploy the zimlet!

Deploying to server [servername]... failed
I modified it back to exact same "Hello World" .xml in the wiki and it deployed ok. I don't know exactly why it failed to deploy with my modified version. I've searched the /opt/zimbra/log/ directory for why it failed, but couldn't find anything. I've searched the forums, wiki and google, but couldn't find anything.

Any help?