lyx font in LyX 1.3.0

Hi guys, I just installed the new LyX 1.3.0 with QT GUI. It looks very good but he cannot render many characters like \sum \int all the greek alphabet and so on. Does any of you have an idea where the problem is? thanks a lot lorenzo

lyx font in LyX 1.3.0

Hi guys, I just installed the new LyX 1.3.0 with QT GUI. It looks very good but he cannot render many characters like \sum \int all the greek alphabet and so on. Does any of you have an idea where the problem is? thanks a lot lorenzo

lyx font in LyX 1.3.0

Hi guys, I just installed the new LyX 1.3.0 with QT GUI. It looks very good but he cannot render many characters like \sum \int all the greek alphabet and so on. Does any of you have an idea where the problem is? thanks a lot lorenzo