Arcane revealed
Discovered the crash on WinUAE, basically the Crash happens only if iBrowser installation is done from a Windows folder attached on WinUAE.
It is solved by first copying the iBrowser folder to HardFile, done this the installer works perfectly.
What is very strange is that with the Instraller of OS 3.1.4/3.2/3.2.1 this does not happen
I tested your install-ib-debug, it starts with a numbering and at number 17 WinUAE crashes
