RobotStudio event

problem after one cycle [Palletizing PowerPac]


I create systemof palletizing/depalletizing, but ir works correctly only 1 cycle of complete pallet. I didn't change any I/O of system, they all are default. One pallet after one depalletizing cycle became invisible, other pallets works almost correct, except some random cases. Where can be a problem?

There is Pack n Go of this system:

There is video about that: