There are 2 issues when playing this mission with Newdark. Firstly the key you get off the guard in the first courtyard does not open the first door,
this is not a game stopper as you can bash the door down with your sword. However the second issue is a game killer, there is a second key later in
the mission that does not unlock the door to the prison area, thus you can NOT finish the mission, unless you install Voodoo'd .dml fix

Solution for both issues:
Install the .dml fix found at http://www.ttlg.com/forums/showthread.php?t=145374

Warning: DO NOT install the dml fix directly into you main Thief folder, install it in your FMsel/FMs/WDOA root folder ONLY