Your sim crashed.
DOCTOR tells you why.

THREE JOBS

Diagnose. Check. Clean.

CRASHES — every unexpected exit, grouped by cause, with the fix in plain words: access violations (drivers, overclock), out-of-memory, DirectX… and the full history of each one — date, track, car, version — so patterns jump out.

HEALTH — what your iRacing folder weighs and why: telemetry, paints, replays, setups, videos, logs. Each with a plain explanation of whether it's safe to purge.

CLEANUP — tick what you want gone. Before deleting anything, DOCTOR tells you exactly what happens if you delete it — and everything goes to the Recycle Bin, so you can always undo. Your setups, progress and licences are never touched.