log: Reading Z:\astronomy\2025-05-25\M57 (NGC 6720,Ring Nebula)\02_25_20_Green.ser
SER file open: Permission denied
log: Error while opening ser file Z:\astronomy\2025-05-25\M57 (NGC 6720,Ring Nebula)\02_25_20_Green.ser, aborting.
log: File Z:\astronomy\2025-05-25\M57 (NGC 6720,Ring Nebula)\02_25_20_Green.ser was not recognised as readable by Siril, skipping
log: Skipping input file Z:\astronomy\2025-05-25\M57 (NGC 6720,Ring Nebula)\02_25_20_Green.ser (failed to be opened)
Siril at this point locks up and needs to be exited and restarted
the same file loads fine in PIPP, AutoStakkart, etc.