这个问题快疯掉了 ADB server didn't ACK
[2015-03-21 00:06:21 - adb] ADB server didn't ACK
[2015-03-21 00:06:21 - adb] * failed to start daemon *
[2015-03-20 23:38:49 - stu] The connection to adb is down, and a severe error has occured.
[2015-03-20 23:38:49 - stu] You must restart adb and Eclipse.
[2015-03-20 23:38:49 - stu] Please ensure that adb is correctly located at 'C:\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' and can be executed.