installing Personas in LibreOffice 5.1 crashes every time?

Anyone else having difficulty? Every time I attempt to do an on-line install of any Persona, LibreOffice crashes. Every time. With any Persona.

I did not fully understand the instructions of installing the Persona(s) manually, especially with modifying the registrymodifications.xcu file. However, I have copied the Header and Footer Theme Files from Firefox, given I will be utilizing the same Persona I utilize with Firefox. Is there a way to manually put those two files in the Gallery Folder so that LibreOffice automatically applies that specific Theme? Alternatively, is there a way to manually adjust the color of the Toolbar to match the Persona Color Theme rather than having to install the Persona?

Any assistance would be very much appreciated. Thank you!