hi,
i had the same problem and the problem was the missing data dir + wurfl.log under the joomla tree. After creating it everything was fine. For me it was "/var/www/joomla/plugins/mobile/terawurfl/data/wurfl.log" The file and directory has to be writable by your apache user i.e. www-data. Maybe this is missing by the installer. To get your own path insert
into your index.php and open the page.
Greets
doggy
i had the same problem and the problem was the missing data dir + wurfl.log under the joomla tree. After creating it everything was fine. For me it was "/var/www/joomla/plugins/mobile/terawurfl/data/wurfl.log" The file and directory has to be writable by your apache user i.e. www-data. Maybe this is missing by the installer. To get your own path insert
ini_set('display_errors','On');
error_reporting(E_ALL);
into your index.php and open the page.
Greets
doggy