I've had three crashes in a row trying to remove background gradient with DBE. The only error is "PixInsight Core 1.8.0 Ripley has stopped working. A problem causes the program to stop working correctly. Windows will close the program and notify you if a solution is available."
The OS is Windows 8 Intel i5-3210M CPU @ 2.5 GHz, 8 GB ram, 64-bit X64 based.
Regards,
Charlie