UO Second Age

not sure what you mean when u say OS? But I am using the download from this site and I am running it as Admin. It wasn't doing this last week just started giving me the fatal error 2 days ago for no reason really. And when i try to right click the razor shortcut or in the razor file it says my windo...

When i try and start razor it gives me a fatal error saying can not open font.mul and just freezes....i can still open uo and play the second age server just cant use razor any help would be nice.