* Silverlight 1.0 Only ; ** Silverlight 2 Only
RECOMMENDED: Use Silverlight in the 32-bit Internet Explorer process on x64 systems. Most browser plug-ins (including Silverlight, Flash, Java and almost all ActiveX controls) only work in 32-bit browsers currently.
For Apple Mac OS users:
Make sure you have the one specific font Silverlight is looking for, it is Arial.ttf, just plain arial.ttf. Also, make sure you are putting it in hd/library/fonts. If you have placed other arial fonts in that folder, try removing them so the only arial font in the folder is arial.ttf. Otherwise Silverlight may get confused!!