Greetings!
Getting straight to the point... In GTA III there is a bug in the mission to take Toni Cipriani to receive the "protection" money that will crash the game, this occurs when the cut scene is skipped, not skipping the scene is a fix, but this is not the best way. What happens? Instead of showing the car leaving the garage, the screen will be stuck in a first-person view showing the street with Toni talking in the background, and only the "Esc" button will respond.
In the VC on the mission to kill Ricardo Diaz, when he (Diaz) goes to look at the monitors the game will freeze and no command will respond, and none of the usual means of closing any programs will work, so the PC will be 100% frozen and the only solution will be to unplug it. Yes, this is a serious bug!
All of this occurred in retail version 1.0 on Windows 7 Ultimate 64-bit with the latest version of SilentPatch applied, a file was also applied to transform the games into portable versions, and of course the widescreen mod was also applied into the mix , along with the latest version of "ModLoader" to load a PT-BR translation.
Anyway, the solution to fix these bugs is to use "III.VC.SA.WindowedMode", and obviously play in windowed mode. =)
I have to say a huge thank you to the developer for creating this top notch mod! If it weren't for him there would be no other solution to these annoying bugs. I hope this information helps others in some way, as I had to rack my brains to find a viable solution. All over the internet there is no solution for this, and trolls everywhere recommend buying the Steam version, which is no longer for sale.
Best regards!