I recently updated my PortableApp’s version of LibreOffice on my USB drive. After updating, I found all of my extensions had been removed. Luckily, I had the oxt’s downloaded onto the same USB drive, apso and Zaz-Pip. Apso installed, but it caused problems. I tried to install Zaz-pip, but that completely failed.
The latest PortableApp version of LO is 7.4.1, 32 bit.