3kma files not found

[billyo]

i just upgraded to the new version about a week ago and everything is fine except i had three songs that i know i have in my external drive but last night while doing my show someone requested the three songs in which she does all the time when i did a title search " i got a msg. "kma file is not in the harddrive".but when i did a brand search it was there and i was able to play it....any suggestion..title is highlighted by the way..