Thanks for your feedback.
Please download the new program at http://18.104.22.168/download/tmp/bluraycopy_setup.exe
to reinstall. Please load your Blu ray disc to copy again. If still the same, please go to this directory C:\Program Files\Leawo\Blu-ray Copy\log, find the log file to send to us at email@example.com
What's more, how large is your original Blu ray disc? How large is the space of your temp folder? Could you please send us screenshots to show us the size? Thank you for your cooperation.