Wing FTP Software

We're running Wing FTP Server 4.6.3 on Linux (CentOS 6.5), and randomly the server has stopped logging to its Domain log. I've restarted the server, tried disabling and re-enabling domain logging, changed the format of the log name, but the most I can get it to do is write out "Domain has been started." I have all domain log options checked, there are no issues on the filesystem which would prevent writing of a log file. The system log and the audit log are still working fine.
Is there something else I can do to attempt to jump start this logging process?

Thanks.

First, please upgrade to the latest version 4.7.6, and do you have large FTP traffics? maybe you can set the max size of the log file under "Domain > Settings > General Settings > Domain Log > Log Maxsize".

For whatever reason, reducing the Log Maxsize worked.

Thanks!