the connection to adb is down and a server error has occured. You must restart adb and Eclipse.
Please ensure that adb is correctly located at 'E:\setups\android\android-2.1_r01- windows\tools\adb.exe' and can be executed.
解決方案很簡單：在任務管理器中關閉最後三個字母和後綴是adb.exe的進程