[Android Error] Unknown error: Unable to build: the file dx.jar was not loaded from the SDK folder!

Unknown error: Unable to build: the file dx.jar was not loaded from the SDK folder!

해결방법은 간단합니다.

Android SDK Manager에서 Error가 나는 Android version을 Delete 한다음에 다시 Install 하거나

Android SDK Tools를 Delete 하고 다시 Install 하면 됩니다.

[Android Error] android.view.WindowManager$BadTokenException: (0)	2014.04.02
[Android Error] trying to requery an already closed cursor (0)	2014.03.21
[Android Error] java.lang.RuntimeException: Unable to stop activity {패키지명/패키지명.Activity}: java.lang.NullPointerException (0)	2014.03.21
[Android Error] Incorrect line ending: found carriage return (\r) without corresponding newline (\n) (0)	2014.03.21
[Android Error] Call requires API level 3 (current min is 1): new android.os.AsyncTask (0)	2014.03.21