Some Songs Missing When Batch Impoted

[niceguy]

When I do a batch bin import from my hard drive, It says that all songs have been imported, but I find that certain songs are not in data base. I do a search for the song, and look in the songbook, and some of the songs did not import. If I go back and single import songs, it shows up in the data base and songbook. Why are only certain songs batch impoting, and others not?

Thx