Sulphur glitch

[swatnt]

So, I ran around trying to find the Sulphur in the Examination Room for an hour. I had the other 5 chemicals. I finally decided to check a walkthrough on the location of the Sulphur. Well...I checked behind the books on the desk and there's nothing. A definite glitch. I had to load back about an hour and half of gameplay in the Examination Room and saw the Sulphur was there. It's heavily discouraging to have to go through the gameplay again. Any fixes for this, so I don't have to go back?

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Actually, at worst case, can someone send me a save game file at the examination room after killing Amabel, etc if it can't be fixed? It'd save me a ton of time.