Just noticed these errors lurking in a php5_error_log:
[19-Aug-2013 12:14:18 America/Denver] Caught exception 'Exception' with message 'Invalid device in fallback tree for generic_android_ver4_3' in /home/mysite/public_html/plugins/mobile/scientia/scientia/TeraWurfl.php:259
[21-Aug-2013 16:59:44 America/Denver] Caught exception 'Exception' with message 'Invalid device in fallback tree for generic_android_ver4_3' in /home/mysite/public_html/plugins/mobile/scientia/scientia/TeraWurfl.php:259
[24-Aug-2013 15:14:30 America/Denver] Caught exception 'Exception' with message 'Invalid device in fallback tree for generic_android_ver4_3' in /home/mysite/public_html/plugins/mobile/scientia/scientia/TeraWurfl.php:259

What versions of MobileJoomla and Mobile-Scientia plugin do you use?

I'm not the one that made the original post but I'm getting something similar.  Below is a entry in the error log and my version number.  Any ideas?

[27-Mar-2014 00:52:46 America/New_York] Caught exception 'Exception' with message 'Invalid device in fallback tree for generic_android_ver4_3' in /home/rollrs/public_html/plugins/mobile/scientia/scientia/TeraWurfl.php:259

1.2.8