Unable to create new project in android -

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i've update adt , android sdk 22.6.1 thereafter come across 1 weird problem. during creating new project in android there drop down menu selecting minimum required sdk in first screen below application name, project name , package name. unable open dropdown menu. skip option , in final screen shows error 

  "navigation type "none" requires minimum sdk version of @ least 1, , current min version 0".

any 1 have faced issue before?


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