Hello There,

I  added lang files into TinyMCE folder, all  languages : 'en' changed to  languages : 'ru' . But it can't find lang files and it shows lang codes like advanced.code_desc . I can not understand where i did mistake.

Any ideas?

Look for a file like this:

inc/classes/scripts/BxDolConfig.php (or something like that) and then open it, you'll find the different TinyMCE JS basics in those files.  It has the different types of TinyMCE's that can be called.  Just do a search for TinyMCE and you'll find them all.  Make the changes in those. 

**Note:  It could be templates/base/scripts/BxBaseConfig.php (Sorry, I forget which one it is and don't have the time to look right at this moment)

Thanks I tried all but no result. Then I renamed all ru files to en then replaced all them. Now it is showing in russian lang.