Attempted to downgrade to 1.0.4.0. My antivirus (Norton) said that Zolika Patch had a heuristic trojan virus in it, and Norton blocked other things from being downloaded on the downgrader. When trying
GTA IV, Patch 1.0.0.4 vs Patch 1.0.8.0 - my personal investigations - UPDATED - GTA IV - GTAForums