2.11 after update issue

This is my first time update my Music Template.

I have done this thing:
1. Download the 'gk_music_J!25.zip' from the download page.
2. Extract it at my desktop, and edit some css to give the my costumized template (override.css and footer.css)
3. Delete all thing at template/gk_music, and copy the new one with ftp manually.

After update, the front-end works well, but at the template config at the back-end it shows some bug:
Basic Setting:
TPL_GK_LANG_CONFIG_DELETE
TPL_GK_LANG_CONFIG_DIRECTORY/home/mahasisw/public_html/templates/gk_music/config/

Feature:
TPL_GK_LANG_WEBMASTER_CONTACT_TYPE

Social API:
TPL_GK_LANG_TEXT_GOOGLE_PLUS_SHARE_LINE
TPL_GK_LANG_GOOGLE_PLUS_SHARE
TPL_GK_LANG_GOOGLE_PLUS_SHARE_SIZE

Advanced Setting:
TPL_GK_LANG_JS_COMPRESSION
TPL_GK_LANG_EXCLUDEJSCSS

Is there any failed thing to update ?
Or is there any step i did wrong when updating the template?

Hi,
You didn't copy one file. Please copy language/en_GB.gk_music.ini to language of your joomla root folder.

It solved now.
Thanks Konrad.