If you have been using a different charger to charge these LiPo's before you got the PL8, then chances are the over-voltage safety codes you received are due to the fact that the other charger over-charged the cells slightly.
Agree but the only time I have ever seen this happen is after charging on another charger and then doing a topping off(?) charge on the CellPro 10 or POWERLAB8. IMO it should not require any cycling to correct this jus a discharge as in using it or just discharging to Storage with the PL8. Next charge should be fine.