From the FAQ for CloneDVD at the Slysoft forums:
[I]If you use Clonedvd, then provide the Clonedvd log file after Clonedvd has finished--or after you receive an error message.
a)In the white area under the tab labeled "Log", right click and select "save as".
b)Select where you want to save the log, and then save it.
c) The log will be a .txt file.[/I]