I'm trying to install Cosmos OS Devkit, but after installing Inno Setup, it says "Inno Setup failed to install!" even though the installer said it was successful. I tried reinstalling it, turning off anti virus, and running as admin, but nothing is working, please help me.

I'm trying to install Cosmos OS Devkit, but after installing Inno Setup, it says "Inno Setup failed to install!" even though the installer said it was successful. I tried reinstalling it, turning off anti virus, and running as admin, but nothing is working, please help me.