0.7.4 has been released (0.7.3 was skipped due to problems with the new CI setup).
This version fixes the reported problems on Windows 7 and macOS. From now on releases for Windows, macOS, Ubuntu and Arch Linux will be built automatically which (hopefully) means that I'll be able to make new releases more frequently.
The Windows problem was that the bundled MSVCRT DLLs were incompatible with Windows 7 and I didn't notice because they aren't used on Windows 10. The macOS build was missing a required file for 7z which caused mod installations to fail because Knossos couldn't extract the downloaded archives. Finally, there was a problem which caused the first run wizard to be hidden after the first page.
There've been a lot of other fixes in 0.7.2 which are listed over on GitHub