Do you know how to clone language with Khmer Language?

I search and check some reference for apply khmer language.

I read article in forum have introduce about structure for clone language but when I apply has problem with product adding.

Do you know i apply database table true or fail? Please look at the picture.

According to your picture, you didn't change locale and folder, which is pretty important. Also you need to have a "khmer" folder - you can copy "english" folder and rename it, if you decided to go with translation yourself.

After I clone language and

I register for testing show message
- Notice: Undefined index: approval in /catalog/model/account/customer.php on line 14
- Notice: Undefined index: approval in /catalog/model/account/customer.php on line 30
- Warning: Cannot modify header information - headers already sent by (output started at /catalog/controller/startup/error.php:34) in /system/library/response.php on line 12"

Notice: i used "second language" that clone from "default language" after i clone, I change any text in this language to my language text with "khmer language" but when i register for testing show message error. why?

Please help resolve my problem.

This error (notice, actually) has no relation to language files.

Do you know to resolve this problem?

Check your customer groups, open and save them. Also check everything in your store related to customer's approval and either turn it on or off.

If nothing helps, simply set Display Errors to No in store settings. Nothing's vital here, just approval index is missing.