If you got the folder structure right "standalone_content\images\BDSM_Club... etc.", since the image files themselves are ok, maybe redownloading version 1.3.4 Fix 4 (newest so far) of the game in
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helps, in case the game itself got corrupted while downloading.
It could also be a bug with the altered player or the game itself, in which case you would need to wait for a bug fix. Maybe the player might needs something installed on your system that isn't, but isn't throwing an error message either.
Just in case. When you start the game, does it look like this? There's actually another picture before that, that's replaced by the menu after a few seconds. It's what happens when the game doesn't have the images folder.
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