Type of Problem: Can’t inject modded .gpd file for GTA 5.
OS: Win8.1
Antivirus/Firewall installed: Nothing.
Errors: Invalid number of free blocks detected while allocating blocks. (See image…

Small update: I noticed this only happens with the GTA5 gpd. When I replaced the FFFE07D1 file, it worked fine. I think it’s because the modded gpd is somehow slightly smaller or my profile doesn’t have enough free space in it for the modded one. Doesn’t make much sense though.
Update: after some thinking, I’m certain my profile is NOT corrupt because I unlocked a couple achievements recently while finishing GTA 5’s story. So I’m thinking it is your program at fault somehow or a 360 console update has done this. Small chance of something else.