Can only transfer certain music files to external sd card

[AC Question]

I have a LG Optimus L9 and a 2gig external sd card, i had an old samsung galaxy that i was using previously, when i try to transfer music files to the sd card for some reason it only transfers certain ones, and the ones i cant transfer will go into the internal memory which isn't much, i've tried reformatting, and making all files read only option off looking for the issue. Also i tried to copy to internal and move it from that storage to external and get the error message, "can not transfer for unknown reasons"

 

[amazengrace]

I am having the same issue..Optimus L70
I was able to transfer other mp3 files but theres one in particular that it will not allow. Says "Can't move for unknown reasons" WTH??

 

[UJ95x]

Do the music files play (the ones that are not transferring) when using the music player app?
If they're corrupted you will most likely not be able to transfer them.

Sent from my Galaxy S4 running SlimKat 4.4.4

 

[jumada]

I had the same issue and came here looking for help, think I found my problem. The name of the song had a question mark in it. I renamed the file, removing the question mark, and the file transferred over. Maybe the same can help you.