If you have trouble with the first unlocked (brown) door playing a sound but not opening in version .55e, please send me your player.log file at \Users\YourName\AppData\LocalLow\Team Puzzle Games\Cult of Damaskus\Player.log. Thank you.
https://upaste.de/raw/d3c
Started a new game on Easy and just beelined to the door and spammed use on it before quitting.
Thanks a ton, looks like this revealed the problem. Hopefully I can actually fix it this time.