I get the identical error.
log_metro.txt is not found in My Documents, but in the root of F:\, which is the drive I installed the game onto. The contents are:
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Opened log in "userdata/log_metro.txt".
Error: File "userdata/settings.script" not found!
Error: Runtime error in "metro/scripts/init.script" at line 8: Internal error!
Closed log in "userdata/log_metro.txt".
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the cited path, "userdata/" does not exist.
Apparently, someone has made the rookie programmer mistake of hard-coding pathnames, so that if the game is not installed in the default location, it fails.
Please advise, other than "install it in the default location".