Figured out the issue. The changes.ini file for LegacyPC has it where install_folder8=override at the beginning for the install list. That folder itself doesn't exist in the LegacyPC version since it deals with gamepad controls. Removing it fixed the installation for me. I've attached the ini I used. Let me know if you need any additional info.
changes-legacypc_no_installfolder8.zip