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We are getting a warning that states the following...
Notice: Undefined index: mobile_tools in /mnt/apci/main/www/sites/all/modules/contrib/mobile_tools/views/plugins/mobile_tools_plugin_access_mobile.inc line 15
I dug a little deeper and found that the problem is that you are using a deprecated method within your views access handler to get the options for that plugin.
Patch to follow.