When I update Paquet Builder, it always overwrites the Compiler/UPX folder and that means I need to restore the UPX folder with every upgrade. It would be nice if that folder was not wiped-out on a re-install.
The uninstaller of V3.4.1 now takes care of that, so upgrading to V3.4.1 will not be OK but upgrading from V3.4.1 to future versions will. Another minor upgrade is also coming in January for SHA-2 code signing support.