Go to your My Docs Folder & delete DayZ + DayZ other profiles folders.
Steam > r/click DayZ, properties, local files, verify game cache.

You will have to reconfigure settings in-game after launch.

If still not working, or it breaks again after quitting DayZ - vote up issue 0000112

Go to your My Docs Folder & delete DayZ + DayZ other profiles folders.
Steam > r/click DayZ, properties, local files, verify game cache.

You will have to reconfigure settings in-game after launch.

If still not working, or it breaks again after quitting DayZ - vote up issue 0000112

This happens on all Catalyst revisions I have tried, currently 13.12 release:

1. Launch DayZ (-disableShaderGeneration) = crash to desktop
2. Delete dayz/other profiles folders in My Docs
3. Launch DayZ (-disableShaderGeneration) = DayZ Menu
4. Quit DayZ (NO change to any cfg, settings etc)
5. Launch DayZ (-disableShaderGeneration) = Crash to desktop
6. Launch DayZ (-disableShaderGeneration removed) = Crash to desktop
7. Delete dayz/other profiles folders in My Docs
8. Launch DayZ (-disableShaderGeneration removed) = DayZ Menu
9. Quit DayZ (NO change to any cfg, settings etc)
10. Launch DayZ (-disableShaderGeneration removed) = Crash to desktop
11. Launch DayZ (-disableShaderGeneration) = Crash to desktop
12. Delete dayz/other profiles folders in My Docs
13. Launch DayZ (-disableShaderGeneration) = Crash to desktop
14. Launch DayZ (-disableShaderGeneration removed) = Crash to desktop
15. Verify via Steam = '1 file failed to validate', re-acquiring.
16. Delete dayz/other profiles folders in My Docs
17. At this stage DayZ will ALWAYS go to menu with or without shaders enabled, but when DayZ quits the next launch always crashes.

Repeating steps 15 & 16 usually launches to DayZ menu. But when DayZ quits, things go wrong.

Will post Steam\logs\content_log.txt (integrity check log) when I get home.

Also my Steam username is 25 characters & is truncated in menu screen. Will that cause any problems?

Steam in Admin mode did not work any differently.

Tonights RAR:
https://www.dropbox.com/s/m88b0bncrknzi3x/DayZ%20Part%204.rar

Edited post for clarity, was a bit of a mess earlier...

No overclocking on CPU/GPU/RAM.

A/V is MS Security Essentials - disabled - added exception for Steam folder - no change.

Unity, Frostbite, Source & Unreal engined games are all running OK on my system from the same SSD.

SSD diagnostics = SSD is 100% ok

Here's the Steam log, sorry it's late, I work nights:

https://www.dropbox.com/s/br3lgs6fplxulfg/content_log.txt

This stands out:
[2013-12-20 20:35:26] Validation: SHA mismatch "R:\Steam\steamapps\common\DayZ\dta\bin.pbo"

Update: 0.30.113860 always crashes, usually before Bohemia logo -disableShaderGeneration on or off.

Steps from post above (0003746) do not launch to DayZ menu anymore. :( UPDATE - now working as well as previous patch - forgot to reboot!

Always this file corrupt: "R:\Steam\steamapps\common\DayZ\dta\bin.pbo"
Steam replacement file is either ~32Mb or ~430kb with no pattern I can see.

Do you need any more files?

1. No mods
2. DayZ data? Sometimes OK, sometimes not. See step 15 in next post.
3. Have tried Catalyst 13.9, 13.11 beta9.2, 13.11 beta9.5 & will be trying 13.12 after work
4. Only MS Sidewinder 2 Joystick & 3rd party Microphone
5. Who runs Steam as Administrator? :) I will try this though.

I use dual monitors, 2 x 1920x1200, controlled by DisplayFusion. I am trying to run DayZ on primary monitor only. I have also unplugged 2nd monitor with no change. No eyefinity.

Tonights update:

Steam download/applied update 0.29.113822
Launch DayZ = Crash to desktop
Delete dayz/other profiles folders in My Docs
Success, after ~10sec on Bohemia Logo & 20 on DayZ logo I'm in!
Configure Video settings & Save
Quit & relaunch = crash to desktop
Check DayZ.cfg = full version
Verify DayZ via Steam integrity check = OK
Delete dayz/other profiles folders in My Docs
Launch DayZ = Crash to desktop

Have included the new dayz.cfg in the RAR:
https://www.dropbox.com/s/mecjj4z93qif54u/DayZ%20Part%203.rar

Tonights update:
Got a few more seconds at Bohemia logo, then error.jpg (see RAR)

Steam applied new update
Delete dayz/other profiles folders in My Docs
Launch DayZ = error.jpg (see rar)
Verify DayZ via Steam integrity check = 1 file corrupted - re-downloaded
Check DayZ.cfg = still truncated
Again, delete dayz/other profiles folders in My Docs
Re-launch DayZ = Back to original issue.
DayZ log update = https://www.dropbox.com/s/rknoyg9iisusr45/DX_part_2.rar

I should mention I am running multi-monitors, but not for the game, besides I have tried with a single monitor - no difference.

Also: Take On Helicopters, ARMA2,ARMA2:OA,BF,PMC are working OK.

I know they are not the same engine, but until I get a better suggestion I believe this indicates a dayz problem & not my PC.

Just did it again for fun - no joy

Windowed did not work for me...

My apologies, it was late & was desperate to try SA :)

Requested info is here:

https://www.dropbox.com/s/kzt73ie7nkh12e9/DayZ_DX_ETC_RAR.rar

Let me know if you need anything else.

<edit>And now dropbox is down...just not my day! File mirrored here:
http://www.sendspace.com/file/sl4lyd