Retail coh dll error

[Capitanloco6]

Today  I tried to install the OMG mod, and it turned out to be a terrible idea. During the installation I got an error related to WW2mod.dll. Now I can't play CoH nor any of it mods. I get this message:

The procedure entry point ?GetFullPathAt_Char@FileSet@FilePath@@QBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@I@Z could not be located in the dynamic link library Filesystem.dll

Any ideas on how to solve the issue?

EDIT: Problem sovled, had to reinstall from CD. Admins, please lock/delete this thread.

[Blackbishop]

You will need to reinstall CoH. It seems the installer replaced (or deleted) a DLL file that shouldn't be messed with.

The latest version is supposed to be compatible with the Steam version though, you may need to ask in their forums for more information about it.