An arch user can in fact obtain the ubuntu font family package from the official arch repositories, with:
pacman -S ttf-ubuntu-font-family
The error will still occur on launching the editor, as Arch stores the fonts in a different directory setup. I see it every time I load up the editor on my system. I haven't bothered to ask about fixing it, and I know I even could redneck rig it up by sym linking the font to a different directory (structured the Ubuntu way). I haven't bothered with this either, because like Guppy said, it shouldn't matter. The editor seems to run fine for me even though it throws the error upon booting every time.
I posed the question because I was hesitant to give a fellow arch user the entire solution any problem, as this is not the 'Arch Way'. The message boards over at Arch have a different culture than the ones here at Leadwerks, and it is so with good reason. Leadwerks is a commercially licensed product, whereas Arch is an open source project developed by programmers/hobbyists in their spare time.
It made me cringe to read through a post on Leadwerks boards that an 'Arch user' requested a refund because he/she was upset that Leadwerks didn't work out of the box. That particular user failed to recognized that his/her issue was in fact O/S specific. The Arch O/S is extremely vulnerable to the PEBKAC virus.