Automator question

I'm wondering if the action "copy finder items" gas a limit to how much it could make a copy of. I have it set to copy my home folder contents to an external hard drive but every time it goes to back up my music folder it fails and the automation stops. Any ideas?

 

my home folder if around 50 gigs backing up to a 250 gig external hd. i had the workflow scheduled and it was working fine but just recently stopped working. when it gets to where it should back up the music folder, it stops and gives me a script error (8).