RobotStudio event

Error in conveyor tracing with two robots.

I have made a simulation of two robots doing conveyor tracking. These robots, as well as their tool paths, are identical. One robot can run contentious cycles, while the other stops after one cycle. Each robot is set up with its own conveyor. The error messages I get is:

IRB_2400_20kg_1.55m_1 (Station): 10002 - Program pointer has been reset 18-12-2015 12:30:13 Event Log
IRB_2400_20kg_1.55m (Station): 10002 - Program pointer has been reset 18-12-2015 12:30:13 Event Log
IRB_2400_20kg_1.55m_1 (Station): 10011 - Motors ON state 18-12-2015 12:30:13 Event Log
IRB_2400_20kg_1.55m_1 (Station): 10052 - Regain start 18-12-2015 12:30:13 Event Log
IRB_2400_20kg_1.55m_1 (Station): 10053 - Regain ready 18-12-2015 12:30:13 Event Log
IRB_2400_20kg_1.55m_1 (Station): 10151 - Program started 18-12-2015 12:30:13 Event Log
IRB_2400_20kg_1.55m (Station): 10052 - Regain start 18-12-2015 12:30:14 Event Log
IRB_2400_20kg_1.55m (Station): 10053 - Regain ready 18-12-2015 12:30:14 Event Log
IRB_2400_20kg_1.55m (Station): 10151 - Program started 18-12-2015 12:30:14 Event Log
IRB_2400_20kg_1.55m_1 (Station): 10122 - Program stopped 18-12-2015 12:30:21 Event Log


What do these error messages mean?

I have put a pack & go on dropbox via the following link:

https://www.dropbox.com/s/znvgi29koj9nzot/10122_Program_stopped.rspag?dl=0