Hi guys, I came across this issue while trying to set my default e-mail writing font to Helvetica Neue Light. It won't save my preference and the font for all new emails is Helvetica Neue Regular. I thought this would be a 10.9 bug, but I have the exact same problem on ML. It won't also save my preference if I choose Open Sans Light in either OS. It seems to have a problem with setting "light" subtstyles as default fonts and automatically reverts to the Regular style. Any ideas?