I\'m trying to update Android Studio from 0.5.1 to 0.5.2 on two separate Windows machines, one with Windows 7 Pro 64-bit and one with Windows 7 Enterprise 64-bit.
I used LockHunter to see what was locking the files. Result: Adb had locked some of them (I was testing the application by wifi in a mobile phone). I killed adb server, restart the Android Studio and I was able to update it.