My previous thread of the same name was closed due to inactivity but I've since revisited the issue and found a solution.

Problem: Running Doomsday Launcher results in recursive "iCCP: known incorrect sRGB profile" errors that prevent a user from launching a game.

Solution: You can avoid this issue by running Doomsday directly (thus circumventing the need for the Doomsday Launcher) by moving your Doom WADS into "/usr/share/doom/" (directory may have to be created) then running the following as your user from the terminal.
To fix the Doomsday Launcher (making Doomsday much more flexible and simpler to use) run the following as root from the terminal
find /usr/share/doomsday/ -name "*.png" -print0 | while read -d $'\0' file; do
Here's the link that helped me resolve this issue.