i had this error trying to run my andriod app from the emulator
The connection to adb is down, and a severe error has occured. In some cases, Android project may get crashed or shutdown abnormally, and caused the "adb.exe" to function abnormally.
Solution To solve it, just restart the "adb.exe" process. Restart the Eclipse will not shut down the "adb.exe" process automatically, you need to kill it manually(Task Manager).
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