Support WIFI Authentication error 5ghz band

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http://androidforums.com – Ok this is becoming a major problem for me. The 5ghz wifi network will not connect. I've tried rebooting my ASUS Dark Knight RT-N66U and the phone. I've been able to get it working before by going into airplane mode and toggling wifi off then on on the phone. However now it's not connecting even though I have full signal. I know it's not the router as my iPad2 sits here and never loses connection to the router. The 2.4ghz band is dedicated to a WDS to my primary Linksys running DD-WRT in another building 250ft away. My phone has the single system update then rooted with TreveEmod on it. (General)