The error pretty much says it:
Invalid
groupIndex parameter! Usage: GetTalentInfo(tier, column,
groupIndex ...
The addon has been marked abandoned
http://wow.curseforge.com/addons/chienergybar/
The addon is using an outdated function prototype (GetTalentInfo(8)) that changed in 6.0.2 to GetTalentInfo(tier, column, groupIndex [, isInspect, inspectUnit])