Cannot update game back to stable branch.

[Ruger (DayZ) 0]

So last night after playing on an experimental server for a bit I decided to switch back over to normal. After opting out of the experimental branch I was prompted to download an update to play again on stable as I always have been. After the update is done downloading a message comes up saying something along the lines of "unable to update dayz, disk write error". I have verified my game cache and reinstalled the patches and the game itself. I am now unable to play the game at all, stable or experimental. I'm not sure if this is a problem with DayZ or Steam but it is very frustrating to not be able to play a game you have paid for, more so when you've spent your whole day off trying to find a solution that seems not to exist. 

[MartinD (DayZ) 86]

May well be your hard drive dude, check it for errors and bad sectors. This used to happen to me on my iMac before the HDD failed.

[MrAkenatom 16]

try to verify integrity of game cache on properties

[wud 143]

Same here.. went from stable to experimental.
Rolled back to stable and now i am only seeing experimental servers
(no filters).. wich i cannot join because of the wrong version check failure.. -_- ?!?
Verifying the gamecache did not to work.

\edit 
steam says i am in build 186870 
is the experimental not version 115791 ?

\edit#2
rolled back twice now .. no matter what i am doing 
running exp or stable, i only see experimental servers 
O_o

\edit#3
my bad
servers are down for rolling update
everything should be fine once they are up again 

 

Edited March 5, 2014 by dawud