[Android Studio]platform not found

Ref from G+

Ater upgrading to AS 0.5.4 I am getting this error 「Failed to set up SDK Error:Module 『AndroinoTerm』: platform 『android-18』 not found」 while I already have android-18 installed. My sdk path is correctly setup and I am also able to run my project successfully. Does Anybody else having this issue ?

Solution: 1. Change sdk folder location 2. update sdk path in android studio 3. change back to original location 4. update sdk path setting in android studio again 5. problem solved