I can see from the resource monitor that the file is no longer being scanned and it’s not restarted syncing, however it is complaining that there is not enough disk space, insufficient space in basic D:\~backupsandclientfiles\########## which would be true if I were syncing the file from fresh, but it’s already on the drive and has allocated the space so it’s not realising it’s already got the file partially downloaded.
Seems i’m going to have to delete the tmp file and start it again.