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Created attachment 9642 [details]
My Xamarin Android Player used to work fine. But somewhere over December/early January it stopped. I can open the app, install and update new virtual devices like Nexus 7 (Kitkat) or Nexus 4 (Jelly Bean). But when I click the Run/Play icon, the virtual device seems to load up properly and the phone VM screen briefly displays in a new popup window, but then the popup window disappears. The icon in XAP then shows a Stop button, i.e. it seems to still be running in the background. But when I try to run my app from Xamarin Studio, there is no error reported, it simply does not start. Due to this problem, I have today (4 Feb 2015) deleted the Xamarin Android Player from my Apps folder, as well as VirtualBox, and reinstalled the latest app from http://developer.xamarin.com/guides/android/getting_started/installation/android-player/ and this installed XAP version 0.1.1(1) and the name of the disk image that I downloaded is "XAP-Beta-14.49-v0.1.1.dmg". This also installed a new VirtualBox for me, and the VirtualBox version is 4.3.12 r93733. From the VirtualBox console it also shows that the VM as running, I can even see the current time (in H:mm format which updates itself every minute) shown on the screen with the Unlock Phone icon in the Preview window from the VirtualBox console, so I'm pretty sure the VirtualBox VM itself is running fine. It's just that XAP can't seem to connect to it. I'm also uploading the log file from my /Library/XAP/Log folder, it shows all log entries made from the point where I pressed the Play button up to the point where the popup screen mysteriously disappeared.
I've seen bug 25619 and mine is probably similar to that, but I thought I would log a new one here with more detail and to bring it to your attention that this is not only an isolated incident for one user.
Oh yes, this happens on my macbook air as well as my iMac, so it's not only one computer that's affected.
Created attachment 9644 [details]
I'm also attaching the VirtualBox log files: file 1 of 3.
Created attachment 9645 [details]
I'm also attaching the VirtualBox log files: file 2 of 3.
Created attachment 9646 [details]
I'm also attaching the VirtualBox log files: file 3 of 3.
*** This bug has been marked as a duplicate of bug 24237 ***