crash on sample app

when I try to ran the sample app on my 5.0.2 device, it's crash with the following

```
Start com.infinitered.bluepotion/.PMHomeActivity
--------- beginning of main
--------- beginning of system
>> E/com/infinitered/bluepotion(31733): Exception raised: NameError: uninitialized constant `PMScreenModule'
E/com/infinitered/bluepotion(31733): Uncaught exception when initializing `pm_screen.rb.armv5te.o' scope -- aborting
--------- beginning of crash
```

Is this a known issue ?

Start by reproducing the crash in the sample app on the reported 5.0.2 device and inspect the initialization of pm_screen.rb.armv5te.o. Investigate why PMScreenModule is unavailable when PMHomeActivity starts. Done means identifying and fixing the cause of the NameError, then confirming that the sample app launches without this crash.

Written by the indexing model from the issue text.