Additionally, try checking Run this program in compatibility mode for and select Windows 7.
Restore the files and add the entire Dead Island folder to your antivirus "Exclusions" or "Whitelist." Dead Island Cannot Find Script Dll X86 Rwdiexe Fix
A less obvious cause is a corrupted configuration file inside your Windows user profile. When Dead Island launches, it reads settings from: C:\Users\[YourUserName]\Documents\Dead Island Additionally, try checking Run this program in compatibility