Got yourself stuck when you want to patch Caesar 4 from 1.00 to 1.12 using caesariv_update_en_10_12.exe?
Don't panic. First, goto Caesar 4 game directory, rename the original caesariv.exe to caesariv1.exe (in case this solution isn't working then you already have the backup. Download this file and extract to Caesar 4 directory, and run the extracted caesariv.exe. This solve my problem.