I'm attempting to do daily log rotation across a bunch of logs. Some are not working and in nxlog's own log it reports "The process cannot access the file because it is being used by another process". It's always the same few log files and we have other, far busier logs (which I might expect to be locked by an active write at the time of rotation) which are consistently working just fine. Some of them which are failing are using the file_cycle function, others using the rotate_to function. I've tried rebooting the whole server, just to be sure nothing else is locking the files.