need help after scorpion moulted

long time no post, I have 2 juvy emperor scorpions that have moulted one is fine and is hardened off black an eating very well again which moulted on the 21st September 2014 the other one moulted 29th September 2014 but still look slightly blue and hasn't eaten a thing and is quiet defensive if u try feed it just picks the cricket up and flings it away tho she isn't limp or nothing ery fast and active is disturbed also has a slight lump between the mesosoma where the soft part is towards the back end before the tail starts any help will be appreciated thank you.