Spoilers to what I believe is the end (or near end):

After the dual encounter with Ivan and Nasha, Yvon and Lloyd's scene in the main entryway by the statue results with Lloyd stuck in a walking animation.  This could be because I did not speak with the ghost painter in that room since I didn't even enter that room until the robots started to take over the mansion, resulting in the ghost just standing right next to them.  Another possible factor is that I didn't run into Nasha prior to that scene.  Tried again from the Ivan/Nasha encounter to see if it were a fluke, with the same results.

I should note that due to the box blocking the secret door, the player is locked in that area rendering the game unbeatable under these conditions.

Thanks for the report