Probably has the wrong permissions or maybe a corrupted apk? Try deleting the apk and copying it back with the right permissions (0644)
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Current Phone: Moto G 16GB Google Play Edition XT1032
ROM: Rooted stock KitKat 4.4.2
Current Tablet: ASUS Nexus 7 (2013) 16GB
ROM: KitKat 4.4.2 with root and TWRP
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