"Add Folder" only adding first 17 folders

[A_Li_N]

I click on "Add Folder" and select my 'Done' folder which contains all of my MP3s that have ID3 tags on them (which I want in the library). The library scans and only finds about the first 17 folders/artists, which it adds to the library just fine. However, there are 416 Artists with album sub-folders. Is there any particular reason that it's only scanning the first 17?

Also, is there a way to remove the 'default' genres? There are 148 total with an empty library, I'd like to have that at 0.

Any help would be appreciated, thanks!