I'm trying to get Operation: Homefront to run

I've tried putting the .big file in

C:\Program Files (x86)\GOG Galaxy\Games\Homeworld Remastered\HomeworldRM\DATAWORKSHOPMODS

and

C:\Program Files (x86)\GOG Galaxy\Games\Homeworld Remastered\HomeworldRM\Data

The furthest I have got is an Access Violation using the following in the HomeworldRM.exe shortcut

Target
"C:\Program Files (x86)\GOG Galaxy\Games\Homeworld Remastered\HomeworldRM\Bin\Release\HomeworldRM.exe" -workshopmod homefront.big

Start in
"C:\Program Files (x86)\GOG Galaxy\Games\Homeworld Remastered\HomeworldRM\Bin\Release"


Any help, much appreciated