I should add, both Traditional and Simplified Chinese.

I'm not a part of the HTMLArea project (just another developer like you), and I'm not really up-to-speed on multi-language support, but I have some basic info that may help you.

HTMLArea has a language file for each language it has been translated into. It uses Javascript language files to initialize an I18N object with text for each message within the editor. There is already a Chinese language file (most likely Simplified) for the built-in components. Each of the plugins has the same language capability, but most do not come already translated into Chinese. In order to make the editor usable for Chinese you would have to perform translation for each plugin you wanted to use. Note that the .js language files are provided with UTF-8 encoding. (Sorry, I have no idea how this translates into Chinese character sets.) HTMLArea also supports L->R and R->L text direction. To the best of my knowledge and testing, HTMLArea also has complete UTF-8 support within the editor itself.

Please note that in order for HTMLArea to have complete UTF-8 support, the operating system and/or web browser must have complete UTF-8 support themselves. (Not likely to ever be an issue.)

Sorry I don't have any more info than this. I hope it helped.

Troy,
I don't have a chance to test what you sent at the moment, but I see two problems right off. I am including your code for reference with problem areas highlighted:

<a href="#"
onclick="javascript:window.open("/create/index.php", "_blank",
"toolbar=no,location=no,scrollbars=yes,resize=yes,width=560,height=650,screenX=0,screenY=100,top=0");">Click
here </a>

First, the "javascript:" does not need to be included within an event attribute (such as onclick).  Second, it appears that you have nested quotes ("), which is syntactically invalid HTML / Javascript. Instead, try this:

<a href="#"
onclick="window.open('/create/index.php', '_blank',
'toolbar=no,location=no,scrollbars=yes,resize=yes,width=560,height=650,screenX=0,screenY=100,top=0'); return false;">Click
here </a>

In this case I have replaced the double-quotes (") with single-quotes (') to prevent nesting problems.  I also added the "return false;" in order to prevent the browser from following the link.  (This keeps the # from being added to the URL in the browser.)

Hopefully this will fix your problem.  If not, let me know and I'll see what I can do.

The following code example will instruct HTMLArea to kill the rich-text formatting on paste.

editor = new HTMLArea("text"); //Create HTMLArea for the textarea with id=text
var cfg = editor.config;       //Create a handle for configurations
cfg.htmlareaPaste = true;      //Instructs HTMLArea to intercept Paste command
cfg.killWordOnPaste = true;    //Instructs HTMLArea to cleanup pasted content

If you are not happy with how well _wordClean() functions, you can copy the function's code from the htmlarea.js file, paste it into your own .js file, and modify it as you wish.  For example:

fixword.js:
HTMLArea.prototype._wordClean = function() {
  //1. Paste  htmlarea.js:_wordClean here
  //2. Edit the pasted code as you wish
  //3. Add new functions to provide additional processing
  //4. Include this fixword.js file in your code after the htmlarea.js file
}

Note that it is much better to override a function as I have described than it is to actually modify anything in htmlarea.js -- this is because modifying the core code will result in your changes being lost whenever you upgrade HTMLArea.

Can you perhaps provide further information about how you are implementing htmlArea? There are a few different methods available for replacing <textarea>'s with htmlArea controls. I have information on the basic approach in an earlier post: http://www.dynarch.com/forums/817. Please review this information and see how it applies to your situation.

To the best of my knowledge, "ERROR_FILE_NOT_WRITEABLE" is not an htmlArea message, and is unrelated to its installation.

If you can perhaps provide a bit of code demonstrating your usage of htmlArea, I will do my best to help you figure out the problem.