I have been using Inkscape for some time, today I get a "font not found on system" error, the font(s) in question are properly installed on my system. I read about this on some searches but I couldn't find a way to correct it. Running 0.48.4, on a clean install.
Any idea?

Are you trying to use arial narrow bold?

No I have some road sign fonts, and they do not work now, but they used to, pretty sure it is a glitch.