Hi Marjorie

To be honest, this feature's only been around less than 2 months so we haven't really had much of a chance to draw up anything like that. Whatever knowledge we do have is held on this Wiki page..

First thing is to check that the files you are trying to import are in UTF-8 format* so that they have support for special characters (accented characters and suchlike).

Once you have done so, if you are still getting errors, post them either here or in the Adapt multilang chat room and we will do what we can to help debug.

* As per the Wiki page:

"When finished translating, save each file as utf-8 in order to accommodate special characters. This is easily done in many word processing applications. It is not possible within Microsoft® Excel. A workaround is to open the file in another program such as Notepad and save it as utf-8 from there.
Note: It is recommended to use a word processing application that provides explicit control over encoding. Without such a feature, it is difficult to know if all special characters were properly encoded. LibreOffice is one such application."

Apparently Microsoft are - finally! - in the process of updating Excel to support saving files as UTF-8 in office for Windows (source) and Mac (source).