Could someone please provide an addon/.stc where Antares, Betelgeuse, the Ruby Star (=119 Tau), P Cygni, R Lep, T Cephei (=HIP 104451) and Rho Cassiopeiae have their radii modified to correction? I have tried to make my own addon/.stc file but it would not work.
You also need to be sure your editor is in Ansi/Ascii mode, not utf-8 because the parser in Celestia has issues with MBCS in ini/cfg/ssc/sst/data files.
Notepad++ defaults to UTF-8 on import unless you set it otherwise because it is internationalization friendly that way. I changed the source of mine and recompiled to force it Ansi/Ascii unless I select otherwise.
Just don't want to see anyone else get stuck in the same rabbit hole I did. You can easily check for out of bounds characters using ztree viewing in hex mode. The quickest check is to look for characters with values $80(0x80) and above.