I'm stuck when I click on a chained up ghost

[Pignouf]

The game runs perfectly, but once I run a mission and then I click on a chained up ghost, the camera zooms on it, but I cannot do anything, I can't go back to the previous view, the cursor disappears and anywhere I click, on any key I press, I stays on this view. The game doesn't crash, It's still continuing to run behind (ambient sound, characters moving...), but I can't do anything.
Once I free a chained up ghost, it does the same bug.
The only key which works is Escape. I checked the control setup, I didn't modified anything in it.
Does anybody has the same bug?
How to fix it?

[Nemesis]

Sounds like a sound issue to me. Each time a ghost is clicked on or laid to rest it should say something. The first time it's a story, the second time a hint and when you lay it to rest usually a word of thanks. Your system seems to have trouble playing these audio files. Please check if you've got the latest DirectX, sound drivers and Media Player installed and try again.

[Pignouf]

Well, I'll try to update my drivers. If the problem persists, I'll reply.

Thanks 4 your help

[systems]

Don't forget to install Media Player 9 as well (as already advised). Good thinking Nemesis333mhz.