Yes, there was a problem in that template. Here are fixed versions, which you can copy into the foolde /Templates/Cosmographer/Wizard/ (overwrite the existing versions).

It places a height symbol as the Stars in the Cosmo 3 style are. It expects the symbol catalog and the symbol name as input next, and then the location and height of the symbol.

You can always try out such a command by typing it at the command line in CC3+.

That map was created via an excel sheet with the data, and a script file created from that data.

Take a look in your CC3+ programdata folder in the "Scripts" subfolder. You should see a "stardata.xls" file and various script files. If you look at the spreadsheet that it contains all the commands and data which appear in the script files - the scr files where generated from that spreadsheet.

In CC3+ you can create a new map, and then run the script via Tools > Macros > Script File to insert all the stars as symbols into the map. You will have to replace all # with @ in the script file first though, as that has changed in CC3+.

What you're seeing is the Windows Text Scaling interacting with the dialog text. Unfortunately that's not something that can be fixed in CC3+ at the moment. I recommend setting your Text Size to 100% in Windows, and instead increase User-defined scaling if otherwise everything is too small.

See my attached screenshot, though it is in German, sorry.

The other option if you want to stay with vector files is a hatch style, but they work a little differently.