Font Changer Script Not Working

[Galoga Mahoga]

Hey everyone, I have an issue here.
I wanted to change my project's font, so it would stand out a bit more, and downloaded a script from the RPG Maker forums. I pasted it in, followed the instructions, dug up the font I wanted to use... and nothing. I've tried everything, from renaming the font itself to putting the font into a folder named "Fonts" in the game directory to trying other font changer scripts. Nothing is working at all.

The script is as follows:

#==============================================================================
# ** Main
#------------------------------------------------------------------------------
# This processing is executed after module and class definition is finished.
#==============================================================================

Font.default_name = "ProFont" # Edit as you see fit.
Font.default_size = 22 # Edit as you see fit.

rgss_main { SceneManager.run }

This is supposed to replace the default Main script, which I've done. The font name is ProFontWindows Regular, but no matter what I type into it--ProFont, ProFontWindows, ProFontWindows Regular--nothing ever becomes of it. I can change the size of the default VX Ace font, but I would rather have my own font.

Can anyone please help?

[Ultratron]

You can try Ace Message system script made by Yanfly, it could come useful.

[Galoga Mahoga]

引用自 Artificer Productions：

You can try Ace Message system script made by Yanfly, it could come useful.

Well, I downloaded the Yanfly Core Engine and Message System scripts just now, and while some functions of the Message System works, like the names over text boxes, the font still doesn't change. I located the appropriate area to mess with and I changed the fonts to some fonts I have on my computer--FixedSys Regular, Terminal Regular, Terminal Bold, yada yada--and they didn't change to anything but the default Ace font. The game even crashed when I tried out the Terminal fonts.

However when I tried out Courier New it worked like a charm. Why is it working selectively?