Copying fails from Falcon Camera to my SD Card

Hello,
I have this error when I want to copy some photos from Falcon Camera to my SD Card. I can see the photos perfectly and I don’t know why I cannot copy them. Any solution for this error ? Please help me to fix this once and for all.
Thank you !

Copying Files
Copying “20130507_141739.jpeg”from “FalconCamera” to “extSdCard”
Error
0/1 items, 0.0/1.4 MiB
0Bytes/s, 0s remaining
The item “20130507_141739.jpeg” Could not be read.
Stop
