FYI
I installed the new firefox .paf.exe just fine, but when I attempted to execute PortableApps.comInstaller_0.91.3_English.paf.exe, I receive the following error:
The version of this file is not compatible with the version of Windows you're running. Check your computer's system information to see whether you need an x86 (32-bit) or x64 (64-bit) version of the program, and then contact the software publisher.