Having a tad of difficulty with the installer.
It seems, though I'm no expert, that the FreeSpaceOpenSetup doesn't like my choice of destination. I have the HotU version of FreeSpace2 installed to G:\Freespace2
Though if I try and get the installer to use the directory, it gives me a bunch of errors, and only successfully puts the RevertToRetail.exe and the UpdateFreeSpaceOpen.exe in the game folder- and tells me the setup was completely successfully. All that worked was the OpenAL installer.
Yet if I let it try and install to the default directory- C:\Games\Freespace2 it seems to work fine. It's now at 84% of downloading mv_models.zip. Whether it will work when it tries to install the downloaded files to a blank directory, I have no idea.