can't get to the proto dragon (Dragon's Dogma)

Brothers, help. I went through the game on a pirate completely all the ZBS, I bought the Steam version for the PC, there are problems with it. In the location "Altar of the God of Water", the pressure plate worked, did not drain the water, I had to re-enter the location 4 times. Now, I’m standing in front of the gate to the dragon, and I can’t open it, when all 4 plates are pressed, the gate remains closed, after re-entering the location, 1-2 plates are already clamped. Loading with a checkpoint corrects the clamping of the plates, but after reactivating them** does not work. I'm already tempted to run back and forth. And I found one similar mention on the net, but it is for the Xbox 360 version and other conditions
from third-party files, only crack