I got the files in your email message. Your ERAS directory contains an extra space and a 2 character at the end. So your target should be this:
D:\Maelstrom\gentlemen-of-fortune-maelstrom-engine\DirectX9_64bit\Config.exe "D:\Maelstrom\Games\gentlemen-of-fortune-historical-eras-module-2 2"
Your system.log tells me this near the top, because it outputs the current directory Maelstrom is using:
Current dir: D:\Maelstrom\Games\gentlemen-of-fortune-historical-eras-module-2 2