This question is for a THEME, not for an extension. I'm only finding answers for extensions all over the internet.
I recently had to reinstall the theme cuz I formatted my PC. I was using the same theme since 6-7 years but when I installed (unzip, then drag and drop) it again today, it says
" Package is invalid: 'CRX_HEADER_INVALID' "
and doesn't install it. I've never had this problem until today.
The theme - http://www.chromeposta.com/games/batman-arkham-knight-chrome-theme/
I recently had to reinstall the theme cuz I formatted my PC. I was using the same theme since 6-7 years but when I installed (unzip, then drag and drop) it again today, it says
" Package is invalid: 'CRX_HEADER_INVALID' "
and doesn't install it. I've never had this problem until today.
The theme - http://www.chromeposta.com/games/batman-arkham-knight-chrome-theme/