Application Name: dupeGuru
Version: 4.3.1
Python: 3.8.13
Operating System: Windows-10-10.0.22631-SP0

Traceback (most recent call last):
File "hscommon\gui\progress_window.py", line 107, in pulse
File "core\app.py", line 332, in _job_error
File "hscommon\jobprogress\performer.py", line 46, in _async_run
File "core\app.py", line 820, in do
File "core\scanner.py", line 152, in get_dupe_groups
File "core\scanner.py", line 97, in _getmatches
File "core\engine.py", line 304, in getmatches_by_contents
MemoryError

App does not close properly after the memory error - shows as still running in task manager.
Debug log ends with
2024-03-01 07:56:29,403 - DEBUG - Collected 0 files in folder D:\For Deduping\C
2024-03-01 07:56:29,403 - INFO - Scanning 1290200 files
2024-03-01 07:56:32,185 - INFO - Getting matches. Scan type: 5
2024-03-01 12:21:29,992 - DEBUG - Debug mode enabled

I assume that last line was when the app had been restarted after the crash.
I'll break it down into sections and try again.