Hi!
I installed AbanteCart on my local server and I received this error:

Sorry, but error occurred during installation:
OK: {"ret_code":50}
Name: 8192::DEPRECATED
Info: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /srv/http/ferkolor/install/model/install.php on line 25

in my sistem running PHP 5.5.7 and MariaDB 5.5.34 (a replacement of MySQL)

I hope that's helpful!!
best regards!