Finder does not show content of some folders
Can't say I've ever seen that sort of behaviour before, I'm not really sure what might have caused it, but I've got two things to test.

First off, it's possible that the folders got hidden for some reason. Try running

chflags -R nohidden ~/Pictures/Photo\ Booth\ Archive/*


If that doesn't work, see if you can access the folders directly in the Finder by focusing the Finder, pressing ⌘ cmd + ⇧ shift + G and entering the full path of one of the folders into the "Go to the folder:" dialog. If Finder can get there, then there's likely some setting hiding them from view; if not, then there's some reason Finder can't properly access the actual directories on disk.