I actually ‘fixed’ it by creating a symlink to the home folder, and the installer ends up creating a folder with a set of DLLs:
D3DCompiler_47_cor3.dll
PenImc_cor3.dll
PresentationNative_cor3.dll
vcruntime140_cor3.dll
wpfgfx_cor3.dll
I think some of these could be installed into the prefix using winetricks, but I’m not sure about the others.
Although this does ‘work’ (and by work i mean it gets rid of the current error, the entire installation process is still borked but now it’s just further down the line) I’m not sure I’m comfortable with the fix. Ideally, I would prefer everything getting installed to reside within the WINE prefix. Finding out what was throwing the path error would probably help but I’m not sure how to figure that out or if it could even be changed.