Thanks for creating this new thread, as discussed earlier.
Please could you send us your Diffblue support log file? This will tell us a lot about what is going on when you see this message and enable us to better understand how to help you.
It is worth checking that you have the expected resources available on the system you are using, namely:
- 4 CPU cores
- 16 GB RAM
- 8 GB Java heap space (see Memory Management for more information)
Best regards
Peter Sear @ Diffblue