Full concept MODIFICATION of S.T.A.L.K.E.R. Call of Pripyat that touches every game aspect including textures, sfx, music, weapons, A.I., items, weather, mutants, difficulty and much much more!

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It has been confirmed that this mod is compatible with the Steam version of the game. Having trouble? Find guidance here

Posted by N.Aaroe on Nov 21st, 2011

No direct acts have been made to make this mod compatible with Steam. However, it has been confirmed that this mod is compatible with the Steam version of the game.

If you do have any trouble regarding this matter you should find plenty of guidance in these user posted tips on how to install and use the mod with the Steam version of the game:

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"Tells me that the wrong disc is inserted. I am playing off of steam."
"To play on Steam, download and install 1.1, start & play the game, then install the 1.1 to 1.2 patch."

"It keeps asking for a disk"
- "There's a problem with the new Xray Engine the mod has, after installing the mod, go into your steam menu right click on the game and select properties. Then go into local files and have it verify, it'll replace the mod's engine with the default but it'll make the mod workable."

"I have CoP through direct2drive.com. I followed the readme instructions to installing this mod but I am also, just as another steam user, getting the securom issue when I start the game. I might also add that a crack doesn't work, it only states that it can't read fsgame.txt"
"Cracked it with the xrengine file but had to run stalkercop in the main directory. cool mod btw"

"I get the Securom thing and can't start it. Tried verifying game cache and it did nothing to fix it."
"Run as admin"
"Just install the mod as written in the readme, then go to your Steam library, right click on Call of prypiat, propieties - local files - verify integrity of game cache. Then automatically 3 files will be downloaded. In this way the mod works fine, but you will have vanilla fov."

"Securom won't let me run it and I don't feel like looking for my retail disc."
"Yea man just copy all the files over... then once you do that go into you steam library and right click on stalker cop-- go to Properties---go to local files and Verify intergirty of game cache. it will see that it needs like 3 files and there you go. start the game up and you will be able to play the game."
"This probably reverts the Xrayengine.exe file back to the original one, and deletes the modded one but, hell, if it works I'll do this. Thanks!"

"It says it needs to have the original CD inserted."
"Installed v1.1 over a fresh installation of CoP, then installed the 1.2 Upgrade over that"

"Whenever I try to launch the game it says "No disc inserted. Please insert the original STALKER: CoP CD/DVD" I tried again after I followed the uninstalliation instructions on the readme and it still gives me the same message every time I try to launch..."
"I think I solved the problem. After you download the mod, go to your Steam library, right click Stalker CoP, go to properties then to local files and click "verify integrity of game cache." Mod is working fine for me now!"

"It kept crashing. I extracted all files into the CoP directory"
"If you have the steam version just place the gamedata folder and the user_atmosfear.ltx in the CoP directory. The unins000/unins000.dat caused the game to crash on steam."
"It was my understanding that you had to put mods for the Steam version in C/Program Files/Steam/Steamapps/common/STALKER Call of Pripyat"

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Thanks to all those who desided to share these tips and insights!

// Aaroe

Post comment Comments
Roh Jan 12 2012 says:

Does verifying with steam and replacing the engine mean we lose some misery features?

+3 votes     reply to comment
Rainydaykid Jan 14 2012 says:

Mod looks great, installed it on steam, start a new game, when it is done loading and I click a button, it crashes to desktop, with no explanation. I extracted the files to desktop, then ran the installer, changed fsgame gamedata to true. I could not find the user_atmosfear.ltx file anywhere. I did the install to the correct path for steam. Will play around with it and see if I can get it to work. If not, it would be a shame, as the mod looks like what I have been looking for in the stalker series.

Comp is:

AMD 4800+, 4GB RAM, HD3650, with vista 32. I ran COP fine at high settings.

+1 vote     reply to comment
Rainydaykid Jan 14 2012 replied:

It works, but now it crashes every time I load a save, and I get this error:

xrEngine.exe caused BREAKPOINT in module "d:\steam\steamapps\common\stalker call of pripyat\bin\xrCore.dll" at 001B:00C8E12E, xrDebug::backend()+174 byte(s)

+1 vote     reply to comment
Seondo May 25 2012 says:

At first my problem came just as it was going to spawn me into the game then it would crash, now it crashes as soon as I go to load it up, its as if its trying to load the intro's then BAM I get an error

The mod looks really nice but I spent over a day trying to get it to work, I probably just installed something wrong so any help would be appreciated :)

+1 vote     reply to comment
devilxking Aug 1 2012 says:

Mod is broken tbh. Really really great work, but there's just something wrong with the installation. I'm forced to delete the user.ltx after every time I play, or the game simply won't load. I get stuck at the load screen for upwards of 20 minutes and it never goes in.

It also crashes if I try to change settings, hit apply, then go back into settings.

+1 vote     reply to comment
Dieger Jan 5 2013 says:

btw im playing on steam and i can run it but if i die or try to load a save WHILE in game it crashes while loading but if i quit and restart at the main menu it loads it fine. O_O some help would be great the mod rocks!!

+1 vote     reply to comment
Rekalty Apr 12 2013 says:

Tried playing with the steam version, simply did not work. Did as instructed and game still crashes every time. I can get to the main menu, but starting a new game makes it crash while loading. Every. Single. Time. Pretty screenshots though, I'm sure it would be a great mod, if it worked.

+1 vote     reply to comment
Sección Aug 11 2014 says:

I'm getting lots of crashes, and they're totally unpredictable. I can't repeat them in anyway, they just happen at random times.

when I got to the logs folder and search the text documents, there's no instance of a "fatal error" so I have no crash report to submit.

I guess I'll just chalk this one up as another good concept mod for one of my many games that's just too unstable for my PC to tolerate.

+1 vote     reply to comment
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