I have an issue when trying to open up Spark IV where it says, "Your GTAiv.exe seems to be modified, or is a newer version than this version supports, etc." I have a feeling it's because I put my GTA 4 folder into a external hard drive, as this: E:\steam\steamapps\common\Grand Theft Auto IV\GTAIV
However, if there's any other factors, I'd like to know. and overall, I'd like to fix it. The computer is a Windows 10. I'll do my best to provide any additional information.
With many thanks, the12thdoctor1