If you're rooted you can probably find the settings yourself.
Sorry, I've never even tested out the NeoReader or library so I don't know what the settings are.
It could be in /data/data/com.onyx.kreader/shared_prefs/com.onyx.kreader_preferences.xml
Mine is empty, yours may not be.
Code:
<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<map />