Crash problem on device but not in unity IDE

I used adb logcat and discovered something interesting that might be the problem. This is the piece of log.

D/CrashAnrDetector( 767):

D/CrashAnrDetector( 767):

D/CrashAnrDetector( 767): Build fingerprint: 'samsung/s3ve3gdsxx/s3ve3gds:4.4.4/KTU84P/I9300IXXSBPF1:user/release-keys'

D/CrashAnrDetector( 767): Revision: '4'

D/CrashAnrDetector( 767): pid: 14943, tid: 14943, name: m.Mygame.Mygame >>> com.Mygame.Mygame <<<

D/CrashAnrDetector( 767): signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr

D/CrashAnrDetector( 767): processName:com.Mygame.Mygame

D/CrashAnrDetector( 767): broadcastEvent : com.Mygame.Mygame SYSTEM_TOMBSTONE

P.S If I add more objects in the scene i noticed that the time until the app crashes is shorter.

I work in my scenes with multiple audio sources parented in empty game objects , and have a canvas that always face the player.

What might be the cause to this crash because in unity i get nothing ???