I'm having the same issue running RA3 under Wine as the guy in this thread.
I want a test solution for this :^)
I use the Steam version, my log is:
----- C&C:Online Launcher Start ----- Game: Red Alert 3 Red Alert 3 Install Path: C:\Program Files (x86)\Steam\steamapps\common\Command and Conquer Red Alert 3\ Started game with: "RA3.exe " Caught CREATE_PROCESS_DEBUG_EVENT from Red Alert 3. Detaching... ERROR: game.dat process not found
Edited by BuIlDaLiBlE, 08 July 2018 - 04:39 PM.