Hi Gary and all mPage /mBook users,
Please download Mobile block 220.127.116.11 and install it as a standard Moodle block for your Moodle 1.9.x server. Then have your mPage and mBook upgraded to the latest 1.3.1 version. Everything works perfectly. More plugins can be found from our http://moodle.hk/download page.
P.S. Please remove the old "mobile" folder from your server ONLY when you are sure all your students have upgraded their apps.