Error message when importing song

I was trying to export a song from 1 folder as a starting point and then importing it into another folder (my user folder) so that I would have all my songs in the one folder. Sometimes I am getting an error message as follows:
Missing Effect to Song Mapping Information. Skipping file. The song I was trying to import and then export was Brushes 4. It also happened earlier with another song (don’t remember which one).

Is there anything I can do to fix this??

Alternatively, is there a different way to copy one of the original songs to a different folder (the new folder that I have created)?

This was already answered here - http://mybeatbuddy.com/forum/viewtopic.php?f=16&t=410&start=20#p1806.

TLDR:
Before exporting a song, rename the song name so it doesn’t have any symbols that are prohibited by the file system.
The list of the prohibited symbols is as follows \ / : * ? " < > |
That way you won’t have errors on importing a song.

Thanks - changing the / to _ works great.