Thanks Meter 1,195
Join Date: Dec 2011
Location: Oxford/Leicester, UK
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You may have clicked deny by accident for root checker! Go into SuperSU and under the apps tab have a look and see if root checker is there and if you have denied it!
If not, then root has not been properly configured so ask in this thread for advice: Updated [CWM]+[Root]Samsung Galaxy s duos 2 s7582