The usual reason B6 crashes when accessing a library is because the presets weren't installed or were installed to a different directory.

Take a look at the library through Windows Explorer. Inside the Presets/Skies folder, there should be an Installed folder and a User folder. In the Installed folder, should be 7 .bsk files: Backdrops, Fantasy-SciFi, Nightime, Starfields, Daytime, Rainbows, Sunrise Sunset. The User folder should have the User.bsk file.

If those files aren't there, then accessing the library will crash Bryce. The same goes for the other libraries.