problem after one cycle [Palletizing PowerPac]

vtns

Hello,

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:

https://mega.co.nz/#!sxc0XSYY!DcDySQA9mVPyTGZAW2DL_RMn2VJ7NEDY7I7RPn-yLF0

There is video about that:

https://mega.co.nz/#!RxdQgayA!Kg1wLHAFtfyyvqLkVLyDmW4ccmROM8I4gX_bu2PO6A0

regards