Android Studio 0.5.0 - No auto code completion and error syntax recognizer after upgrading [closed]

Question

I upgraded Android Studio to 0.5.0 without any issues until I started writing code. It's so weird. Auto code completion didn't work any more. No drop-down list got showed up. Even worse, I intentionally wrote wrong syntax but the IDE failed to warn automatically as it still does at the scrolling line (on the right).

I'm sure that I've already changed into 'com.android.tools.build:gradle:0.9.+'.

Any help?

UPDATE:

I figured out. The cause is, I accidentally turned File > Power Save Mode which does block auto completion, not because of Android Studio 0.5.0 itself.

Answer 1

In my case, that's because I accidentally turned on File > Power Save Mode.