Backbone.js el не работает

Вот отрывок из LogCat:

04-04 19:51:51.270: INFO/ActivityManager(57): Starting activity: Intent { cmp=com.example.app/.Preferences }
04-04 19:51:51.710: WARN/Resources(1081): Converting to string: TypedValue{t=0x10/d=0x0 a=-1}
04-04 19:51:51.740: WARN/Resources(1081): Converting to string: TypedValue{t=0x10/d=0x0 a=-1}
04-04 19:51:51.761: WARN/Resources(1081): Converting to string: TypedValue{t=0x10/d=0x79e a=-1}
04-04 19:51:51.800: WARN/Resources(1081): Converting to string: TypedValue{t=0x10/d=0x5a0 a=-1}
04-04 19:51:51.810: WARN/Resources(1081): Converting to string: TypedValue{t=0x10/d=0x5 a=-1}
04-04 19:51:51.830: WARN/Resources(1081): Converting to string: TypedValue{t=0x10/d=0xa a=-1}
04-04 19:51:51.840: WARN/Resources(1081): Converting to string: TypedValue{t=0x10/d=0xa a=-1}
04-04 19:51:51.860: WARN/Resources(1081): Converting to string: TypedValue{t=0x10/d=0x1e a=-1}
04-04 19:51:51.870: WARN/Resources(1081): Converting to string: TypedValue{t=0x10/d=0x1e a=-1}
04-04 19:51:53.450: INFO/ActivityManager(57): Displayed activity com.example.app/.Preferences: 2061 ms (total 2061 ms)