Default [Q] internal sd storage partition/mount problem

i tried to post the issue for nexus 7 2013 device specifically at http://forum.xda-developers.com/show...8#post47996738 but i believe it is not device specific (the full logs are in that thread):

I'm using a nexus 7 2013 and getting a strange message from logcat system log:
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cutils : Failed to mkdir(/mnt/shell/emulated/0): Read-only file system
dalvikvm: cannot mountExternalStorage(): Read-only file system
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when i try to run applications that needs the internal sd storage they cannot access "/storage/emulated/0" which points to "/mnt/shell/emulated/0" and i'm getting an error message (even google play and the camera application aren't working).

i tried reflashing the original rom with flash-all script (which went fine) but am getting the same errors during boot afterwards.

image installled from here (i have the Wifi Version): https://developers.google.com/androi...es#razorjss15r