I've commented about this topic in the past, but I'll repeat it here.

Bitstream Navigator is VERY buggy and will install and uninstall fonts while browsing fonts - even though you didn't tell it to. As you also noticed, it crashes - a lot.

There are several reliable font viewers and intallers out there. I have been using Font Expert for a few years now with virtually no problem. There are many freeware font viewers available too.

At least with XP, Corel 12 & X3 do not need to be closed and then re-opened to recognize a newly-installed font, but many software programs do. I install and uninstall fonts every day either with FE or via Fonts in the Control Panel. (You can also select Start, Run and type Fonts and it will launch the folder.) It's been several weeks since I rebooted the XP machine or closed Corel and it never has problems recognizing a newly installed font.

I have found over the years that dragging and dropping the font into the system font folder is not always a reliable install into the registry. It works most of the time, but not all of the time.

Michel