Error: Mythril Mines

[Complete Blyat]

Hello, i just recently purchased FF VII on steam on the sale and i've been playing a bit since. I really enjoy the game but i've been encountering an error which I dont really know what to do about.

When I enter the Mythril Mines and the turks appear, and you climb up the tree and walk into the door to follow Tseng, my games always crashes.The screen turns black and when I press any key the computer just makes a funny sound and eventually windows stops the game.

Does anyone know how I can get past this ? I really want to finish the game

Thanks in advance, KrP.

[Cockadoodledoo]

http://steamcommunity.com/app/39140/discussions/0/846959998068855525/