Okay, this started a month ago - DCS A10C Retail (updated to either 1.2.3.10201 or 1.2.10.32582.527) was working fine, I purchased UH1 and FCS and to install them I had to update. I did. Now I can't play at all. I have a ticket but don't seem to be getting anywhere.

Here is a description and the error messages I get:

Okay, this is still not working.
I have updated to 1.2.16.37730.701.
I renamed C:\Users\XXXXXX\Saved Games\DCS
to C:\Users\XXXXXX\Saved Games\DCS temp
and started - still will not start.
I get nothing from running the launcher.
If I run dcs.exe I get the small splash screen showing a hud and clouds in a small window, then in fullscreen mode the screen is black, flashes and stays black. The log files from C:\Users\XXXXXX\Saved Games\DCS temp show some error messages. They are attached.
The only log file I have in C:\Users\XXXXXX\Saved Games\DCS is the me.log file and dcs.log. It is attached.
ASM shader compiler.exe runs and reports 0000.000 error.
blocksimtest.exe says it can't open /utils/blocksimtest.

The error messages I see in the log files are:

dcs.log:
...
00027.926 INFO SOUND: XAudio2: channel layout: Headphones/Stereo
00027.968 INFO SOUND: Using SSE FTZ/DAZ mode.
00028.296 UNKNOWN WinMain: MOD loading: ./CoreMods/aircraft/C-101/entry.lua
00028.297 UNKNOWN WinMain: MOD loading: ./CoreMods/aircraft/C-101/C-101.lua
00028.297 UNKNOWN WinMain: MOD loading: ./CoreMods/aircraft/C-101/Views.lua
00028.297 UNKNOWN WinMain: MOD loading: ./CoreMods/aircraft/F-86/entry.lua
00028.300 UNKNOWN WinMain: MOD loading: ./CoreMods/aircraft/F-86/F-86.lua
00028.300 UNKNOWN WinMain: MOD loading: ./CoreMods/aircraft/F-86/Views.lua
00028.301 UNKNOWN WinMain: MOD loading: ./CoreMods/aircraft/Hawk/entry.lua
00028.302 UNKNOWN WinMain: MOD loading: ./CoreMods/aircraft/Hawk/Hawk.lua
00028.302 UNKNOWN WinMain: MOD loading: ./CoreMods/aircraft/Hawk/Views.lua
00028.303 UNKNOWN WinMain: MOD loading: ./CoreMods/aircraft/MiG-15bis/entry.lua
00028.305 UNKNOWN WinMain: MOD loading: ./CoreMods/aircraft/MiG-15bis/MiG-15bis.lua
00028.305 UNKNOWN WinMain: MOD loading: ./CoreMods/aircraft/MiG-21BIS/entry.lua
00028.306 UNKNOWN WinMain: MOD loading: ./CoreMods/aircraft/MiG-21BIS/Entry/Aw
00028.307 UNKNOWN WinMain: MOD loading: ./CoreMods/aircraft/MiG-21BIS/Entry/Am
00028.309 UNKNOWN WinMain: MOD loading: ./CoreMods/aircraft/MQ-9 Reaper/entry.lua
00028.309 UNKNOWN WinMain: MOD loading: ./CoreMods/WWII Units/entry.lua
00028.311 UNKNOWN WinMain: MOD loading: ./CoreMods/WWII Units/Weapons.lua
00028.313 UNKNOWN WinMain: MOD loading: ./CoreMods/WWII Units/FW-190D9.lua
00028.313 UNKNOWN WinMain: MOD loading: ./CoreMods/WWII Units/Views.lua
00028.315 UNKNOWN WinMain: MOD loading: ./CoreMods/WWII Units/Bf-109K-4.lua
00028.315 UNKNOWN WinMain: MOD loading: ./CoreMods/WWII Units/Views.lua
00028.316 UNKNOWN WinMain: MOD loading: ./mods/aircraft/A-10C/entry.lua
00028.317 UNKNOWN WinMain: MOD loading: ./mods/aircraft/Su-25T/entry.lua
00028.317 UNKNOWN WinMain: MOD loading: ./mods/aircraft/TF-51D/entry.lua
00028.319 UNKNOWN WinMain: MOD loading: ./mods/aircraft/TF-51D/TF-51D.lua
00028.319 UNKNOWN WinMain: MOD loading: ./mods/aircraft/TF-51D/Views.lua
00028.320 UNKNOWN WinMain: MOD loading: ./DemoMods/tech/CombinedArms/entry.lua
00028.321 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/A-10A/entry.lua
00028.321 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/A-10C/entry.lua
00028.321 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/Bf-109K-4/entry.lua
00028.321 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/C-101/entry.lua
00028.322 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/F-15C/entry.lua
00028.322 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/F-86/entry.lua
00028.322 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/Flaming Cliffs/entry.lua
00028.322 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/FW-190D9/entry.lua
00028.322 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/Hawk/entry.lua
00028.323 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/Ka-50/entry.lua
00028.323 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/Mi-8MTV2/entry.lua
00028.323 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/MiG-15bis/entry.lua
00028.323 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/MiG-21BIS/entry.lua
00028.324 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/P-51D/entry.lua
00028.324 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/Su-25A/entry.lua
00028.324 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/Su-27/entry.lua
00028.324 UNKNOWN WinMain: MOD loading: ./DemoMods/aircraft/Uh-1H/entry.lua
00028.324 UNKNOWN WinMain: PLUGINS START-------------------------------------------------
00028.324 UNKNOWN WinMain: plugin: C-101 Aviojet by AvioDev applied
00028.325 UNKNOWN WinMain: plugin: F-86F Sabre AI by Eagle Dynamics applied
00028.325 UNKNOWN WinMain: plugin: Hawk T.1A AI by VEAO Simulations applied
00028.325 UNKNOWN WinMain: plugin: MiG-15bis AI by Eagle Dynamics applied
00028.326 UNKNOWN WinMain: plugin: MiG-21Bis AI by Leatherneck Simulations applied
00028.331 UNKNOWN WinMain: plugin: World War II AI Units by Eagle Dynamics applied
00028.332 UNKNOWN WinMain: plugin: A-10C Warthog by Eagle Dynamics applied
00028.332 UNKNOWN WinMain: plugin: Su-25T by Eagle Dynamics applied
00028.332 UNKNOWN WinMain: plugin: TF-51D Mustang by Eagle Dynamics applied
00028.332 UNKNOWN WinMain: plugin: Combined Arms by Eagle Dynamics applied
00028.332 UNKNOWN WinMain: plugin: Flaming Cliffs by Eagle Dynamics applied
00028.332 UNKNOWN WinMain: plugin: A-10A by Eagle Dynamics applied
00028.333 UNKNOWN WinMain: plugin: Bf 109 K-4 by Eagle Dynamics applied
00028.333 UNKNOWN WinMain: plugin: C-101 Aviojet applied
00028.333 UNKNOWN WinMain: plugin: F-15C applied
00028.333 UNKNOWN WinMain: plugin: F-86F Sabre by Belsimtek applied
00028.333 UNKNOWN WinMain: plugin: FW-190D9 Dora by Eagle Dynamics applied
00028.333 UNKNOWN WinMain: plugin: Hawk T.1A by VEAO Simulations applied
00028.333 UNKNOWN WinMain: plugin: Ka-50 Black Shark by Eagle Dynamics applied
00028.333 UNKNOWN WinMain: plugin: Mi-8MTV2 Hip by Belsimtek applied
00028.333 UNKNOWN WinMain: plugin: MiG-15bis by Belsimtek applied
00028.333 UNKNOWN WinMain: plugin: MiG-21Bis by Leatherneck Simulations applied
00028.333 UNKNOWN WinMain: plugin: P-51D Mustang by Eagle Dynamics applied
00028.333 UNKNOWN WinMain: plugin: Su-25A by Eagle Dynamics applied
00028.333 UNKNOWN WinMain: plugin: Su-27 Flanker by Eagle Dynamics applied
00028.333 UNKNOWN WinMain: plugin: UH-1H Huey by Belsimtek applied
00028.333 UNKNOWN WinMain: PLUGINS DONE--------------------------------------------------
00028.339 UNKNOWN WinMain: ./MissionEditor/data/scripts/unitsclasses.lua loaded
00028.342 UNKNOWN WinMain: ./MissionEditor/data/NewMap/classifier.lua loaded
00030.543 INFO SOUND: loaded 0 sdefs from "c:\users\XXXXXX\saved games\dcs\sounds\sdef"
00030.544 INFO DXRENDERER: Creating Resource "Unicode" of type 5
00037.188 WARNING LOG: 8 duplicate message(s) skipped.
00037.188 INFO DCS: srRes = 422860543, srGoodValue = 422860543 skip
00037.188 INFO EDCORE: (dDispatcher)enterToState_:1
00037.190 UNKNOWN WinMain: DCS started
...
00037.225 UNKNOWN WinMain: Speech module loaded
00037.373 ERROR DXGUI_EDGE_RENDER: Cannot load texture ''
00037.470 INFO EDCORE: (dDispatcher)enterToState_:2
00037.573 INFO EDCORE: (dDispatcher)enterToState_:3
00064.874 INFO EDCORE: (dDispatcher)enterToState_:6
00064.884 INFO SOUND: detaching sdef path "c:\users\XXXXXX\saved games\dcs\sounds\sdef\"
00064.884 INFO SOUND: detaching sdef path "sounds\sdef\"
=== Log closed.

Me.log:
00000.000 INFO EDCORE: createSerialQueue IOQueue
00000.005 INFO VFS: Using 'Saved Games': "C:\Users\XXXXXX\Saved Games"
00000.039 UNKNOWN main: locale: en EN
00000.064 UNKNOWN main: me_db_api creation started
00000.431 UNKNOWN main: MOD loading: ./CoreMods/aircraft/C-101/entry.lua
00000.433 UNKNOWN main: MOD loading: ./CoreMods/aircraft/C-101/C-101.lua
00000.433 UNKNOWN main: MOD loading: ./CoreMods/aircraft/C-101/Views.lua
00000.434 UNKNOWN main: MOD loading: ./CoreMods/aircraft/F-86/entry.lua
00000.437 UNKNOWN main: MOD loading: ./CoreMods/aircraft/F-86/F-86.lua
00000.437 UNKNOWN main: MOD loading: ./CoreMods/aircraft/F-86/Views.lua
00000.438 UNKNOWN main: MOD loading: ./CoreMods/aircraft/Hawk/entry.lua
00000.440 UNKNOWN main: MOD loading: ./CoreMods/aircraft/Hawk/Hawk.lua
00000.440 UNKNOWN main: MOD loading: ./CoreMods/aircraft/Hawk/Views.lua
00000.441 UNKNOWN main: MOD loading: ./CoreMods/aircraft/MiG-15bis/entry.lua
00000.444 UNKNOWN main: MOD loading: ./CoreMods/aircraft/MiG-15bis/MiG-15bis.lua
00000.444 UNKNOWN main: MOD loading: ./CoreMods/aircraft/MiG-21BIS/entry.lua
00000.445 UNKNOWN main: MOD loading: ./CoreMods/aircraft/MiG-21BIS/Entry/Aw
00000.446 UNKNOWN main: MOD loading: ./CoreMods/aircraft/MiG-21BIS/Entry/Am
00000.448 UNKNOWN main: MOD loading: ./CoreMods/aircraft/MQ-9 Reaper/entry.lua
00000.449 UNKNOWN main: MOD loading: ./CoreMods/WWII Units/entry.lua
00000.451 UNKNOWN main: MOD loading: ./CoreMods/WWII Units/Weapons.lua
00000.454 UNKNOWN main: MOD loading: ./CoreMods/WWII Units/FW-190D9.lua
00000.454 UNKNOWN main: MOD loading: ./CoreMods/WWII Units/Views.lua
00000.457 UNKNOWN main: MOD loading: ./CoreMods/WWII Units/Bf-109K-4.lua
00000.457 UNKNOWN main: MOD loading: ./CoreMods/WWII Units/Views.lua
00000.458 UNKNOWN main: MOD loading: ./mods/aircraft/A-10C/entry.lua
00000.459 UNKNOWN main: MOD loading: ./mods/aircraft/Su-25T/entry.lua
00000.459 UNKNOWN main: MOD loading: ./mods/aircraft/TF-51D/entry.lua
00000.462 UNKNOWN main: MOD loading: ./mods/aircraft/TF-51D/TF-51D.lua
00000.462 UNKNOWN main: MOD loading: ./mods/aircraft/TF-51D/Views.lua
00000.463 UNKNOWN main: MOD loading: ./DemoMods/tech/CombinedArms/entry.lua
00000.464 UNKNOWN main: MOD loading: ./DemoMods/aircraft/A-10A/entry.lua
00000.464 UNKNOWN main: MOD loading: ./DemoMods/aircraft/A-10C/entry.lua
00000.464 UNKNOWN main: MOD loading: ./DemoMods/aircraft/Bf-109K-4/entry.lua
00000.464 UNKNOWN main: MOD loading: ./DemoMods/aircraft/C-101/entry.lua
00000.464 UNKNOWN main: MOD loading: ./DemoMods/aircraft/F-15C/entry.lua
00000.465 UNKNOWN main: MOD loading: ./DemoMods/aircraft/F-86/entry.lua
00000.465 UNKNOWN main: MOD loading: ./DemoMods/aircraft/Flaming Cliffs/entry.lua
00000.465 UNKNOWN main: MOD loading: ./DemoMods/aircraft/FW-190D9/entry.lua
00000.465 UNKNOWN main: MOD loading: ./DemoMods/aircraft/Hawk/entry.lua
00000.466 UNKNOWN main: MOD loading: ./DemoMods/aircraft/Ka-50/entry.lua
00000.466 UNKNOWN main: MOD loading: ./DemoMods/aircraft/Mi-8MTV2/entry.lua
00000.466 UNKNOWN main: MOD loading: ./DemoMods/aircraft/MiG-15bis/entry.lua
00000.466 UNKNOWN main: MOD loading: ./DemoMods/aircraft/MiG-21BIS/entry.lua
00000.467 UNKNOWN main: MOD loading: ./DemoMods/aircraft/P-51D/entry.lua
00000.467 UNKNOWN main: MOD loading: ./DemoMods/aircraft/Su-25A/entry.lua
00000.467 UNKNOWN main: MOD loading: ./DemoMods/aircraft/Su-27/entry.lua
00000.467 UNKNOWN main: MOD loading: ./DemoMods/aircraft/Uh-1H/entry.lua
00000.467 UNKNOWN main: PLUGINS START-------------------------------------------------
00000.467 UNKNOWN main: plugin: C-101 Aviojet by AvioDev applied
00000.468 UNKNOWN main: plugin: F-86F Sabre AI by Eagle Dynamics applied
00000.468 UNKNOWN main: plugin: Hawk T.1A AI by VEAO Simulations applied
00000.468 UNKNOWN main: plugin: MiG-15bis AI by Eagle Dynamics applied
00000.469 UNKNOWN main: plugin: MiG-21Bis AI by Leatherneck Simulations applied
00000.474 UNKNOWN main: plugin: World War II AI Units by Eagle Dynamics applied
00000.475 UNKNOWN main: plugin: A-10C Warthog by Eagle Dynamics applied
00000.475 UNKNOWN main: plugin: Su-25T by Eagle Dynamics applied
00000.475 UNKNOWN main: plugin: TF-51D Mustang by Eagle Dynamics applied
00000.475 UNKNOWN main: plugin: Combined Arms by Eagle Dynamics applied
00000.475 UNKNOWN main: plugin: Flaming Cliffs by Eagle Dynamics applied
00000.475 UNKNOWN main: plugin: A-10A by Eagle Dynamics applied
00000.475 UNKNOWN main: plugin: Bf 109 K-4 by Eagle Dynamics applied
00000.475 UNKNOWN main: plugin: C-101 Aviojet applied
00000.475 UNKNOWN main: plugin: F-15C applied
00000.475 UNKNOWN main: plugin: F-86F Sabre by Belsimtek applied
00000.475 UNKNOWN main: plugin: FW-190D9 Dora by Eagle Dynamics applied
00000.475 UNKNOWN main: plugin: Hawk T.1A by VEAO Simulations applied
00000.475 UNKNOWN main: plugin: Ka-50 Black Shark by Eagle Dynamics applied
00000.475 UNKNOWN main: plugin: Mi-8MTV2 Hip by Belsimtek applied
00000.475 UNKNOWN main: plugin: MiG-15bis by Belsimtek applied
00000.475 UNKNOWN main: plugin: MiG-21Bis by Leatherneck Simulations applied
00000.476 UNKNOWN main: plugin: P-51D Mustang by Eagle Dynamics applied
00000.476 UNKNOWN main: plugin: Su-25A by Eagle Dynamics applied
00000.476 UNKNOWN main: plugin: Su-27 Flanker by Eagle Dynamics applied
00000.476 UNKNOWN main: plugin: UH-1H Huey by Belsimtek applied
00000.476 UNKNOWN main: PLUGINS DONE--------------------------------------------------
00000.486 UNKNOWN main: ./MissionEditor/data/scripts/unitsclasses.lua loaded
00000.494 UNKNOWN main: ./MissionEditor/data/NewMap/classifier.lua loaded
00000.499 UNKNOWN main: me_db_api creation complete
00000.503 UNKNOWN main: GUI Error: [string ".\MissionEditor\modules\Options\DbOption.lua"]:131: attempt to call field 'createClass' (a nil value)
GUI debug.traceback: stack traceback:
...
[string ".\MissionEditor\MissionEditor.lua"]:343: in main chunk
00000.503 ALERT LUACOMMON: Error: GUI Error: [string ".\MissionEditor\modules\Options\DbOption.lua"]:131: attempt to call field 'createClass' (a nil value)
GUI debug.traceback: stack traceback:
[C]: in function 'createClass'
[string ".\MissionEditor\modules\Options\DbOption.lua"]:131: in main chunk
[C]: in function 'require'
[string "./MissionEditor/modules/Options/optionsDb.lua"]:2: in main chunk
(tail call): ?
[string ".\MissionEditor\modules\Options\Data.lua"]:142: in function 'load'
[string ".\MissionEditor\MissionEditor.lua"]:211: in function 'loadOptions'
[string ".\MissionEditor\MissionEditor.lua"]:343: in main chunk
=== Log closed.

This is a non-steam version originally retail/dvd running on a core i7 with a GeForce 9800 GT on Windows 7 64bit 8g RAM.

Have you tried to run the repair utility?

Whoa, that's a lot of files missing. Wait, I'm not sure If I understand the first paragraph of Your post correctly, but did You try to add UH-1 and FC3 to Your retail A-10C install? I don't even know if it's possible. Most probably not.

You're supposed to download and install the base DCS World package first and then add all modules to it. I don't own A-10C, but I think this rule applies to Warthog as well. Download and install A-10C package from ED website and use the retail DVD only to authorize the product by the licence key.

Yep, I have tried updating and repair.

This was originally a10c retail, a long time ago I converted over to dcs world and I have done a few updates since then. So I have dcs world plus a10c module. UH! and fcs I have purchased, but not yet downloaded and installed - when trying to install UH1 it said I had to update to recognize the module. I updated again and it didn't start.

Probably couldn't hurt to try Skatezilla's guide to using the DCS Updater command line to get you to the latest version, you can repair etc using it also.

http://forums.eagle.ru/showthread.php?t=114030

If you still have dcs-world installer , i would run it again and use C: drive only as your location for DCSWorld . not program files (86) .
Once installed see if you can run it and fly the free aircraft su25 and p51t. Once ran go into module manager location in main menu and install your modules . see how you go looks like there has been a conflict with your updates .