Help! A read error has occured

Hi guys, I need help. I can’t seem quite understand why I encounter this problem:

“A read error has occured while reading a file.
The file may be encrypted or cannot be read correctly by the DVD device.
If you are using a decrypter, you may need to restart it before running 1CLICK DVD COPY PRO.”

I know that it’s simple but the thing that I dont understand is this…
I already successfully copied the contents of my original DVD to a hard drive folder using DVD43 then from there is where my source folder for 1CLICKDVDCOPYPRO, then I get the error msg above.

Are you using the latest (3.90) version of DVD43 and do you have Cprx enabled on your 1ClickDVDCopyPro?