Titanium stop running/build after successful compile.

Hi guys, I really can't figure it out why does Titanium stop & doing nothing after it compiled successfully.

[INFO] :   Alloy compiler completed successfully
[INFO] :   
[INFO] :   Alloy compiled in 3.55867s

Sometimes, it stopped at installing the app onto a device or genymotion. For real, it's really annoying problem, besides, the memory starvation of Titanium.

Hope you guys have a solution for this. Thank you for your attention.