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It still doesn't work...
I downloaded this patch, extracted it to the game folder, and now, right after launching, Windows displays "The program has stopped working. A problem caused the program to stop working" and that's it (((

The same thing happened to me; the patch didn't help. Here's what it says:

Description:
The error caused the program to stop interacting with Windows.

Problem signature:
Problem event name: AppHangB1
Application name: Might & Magic Heroes VI.exe
Application version: 1.1.0.0
Application timestamp: 4e85f0ac
Hang signature: 82ca
Hang type: 2048
OS version: 6.1.7601.2.1.0.768.3
Language code: 1049
Additional hang signature 1: 82cab6956626b9a2314f36e8e3c0cb14
Additional hang signature 2: adc7
Additional hang signature 3: adc7c184abe80134a4e3a8bae56a4d94
Additional hang signature 4: 82ca
Additional hang signature 5: 82cab6956626b9a2314f36e8e3c0cb14
Additional hang signature 6: adc7
Additional hang signature 7: adc7c184abe80134a4e3a8bae56a4d94