QR-Code button in app doesnt start the Camera

If i press de scan qr-code button i just get a black screen an nothing else happens... I'm using an Acer IConia a700 tab with Android 4.1

Same thing happens to me, using a Nexus 7, with Android 4.2

Same problem on Nexus 7, is there some way how to return to type a code?

Same problem here on Android 4.0.4 In fact, if you look at all the posts here...Notice they are all Android 4.x.x versions?

QR scanner does not work I am using Android 2.3.4 on an LG Optimus Black, after pressing the camera a messed up picture of a QR code appears on the screen and it freezes.
This is not the only problem:
1. Can not find phone
2. Remote camera does not work
3 Password reset does not work
4 Text message did not work at first rebooted and now it works

I have not tried other features, I found in this link version 1.1 I will uninstall v2 and resinstall 1.1 http://www.airdroid.com/download/
The beta version should had been tested before going live.
What a big failure 2.0 has been.

I have a similar problem on a Acer Iconia B1-700 (Android 4.1.2) : when I touch the button "Scan QR code", I only see a black screen with the text "Captez le code damier à: http://web.airdroid.com", and no sign of the photo captor being used.

Just a small problem, but it would be nice if it was fixed