Can you change wu-ftpd/config-debian-linux as follows
to correct some incorrect paths:
--- webmin-0.92.orig/wuftpd/config-debian-linux
+++ webmin-0.92/wuftpd/config-debian-linux
@@ -1,7 +1,7 @@
-ftpgroups=/etc/ftpgroups
-ftpd_path=/usr/sbin/in.ftpd
-ftphosts=/etc/ftphosts
-ftpconversions=/etc/ftpconversions
-pid_file=/var/run/ftpd.pid
-ftpusers=/etc/ftpusers
-ftpaccess=/etc/ftpaccess
+ftpgroups=/etc/wu-ftpd/ftpgroups
+ftpd_path=/usr/sbin/wu-ftpd
+ftphosts=/etc/wu-ftpd/ftphosts
+ftpconversions=/etc/wu-ftpd/ftpconversions
+pid_file=/var/run/ftpd.pids-all
+ftpusers=/etc/wu-ftpd/ftpusers
+ftpaccess=/etc/wu-ftpd/ftpaccess
Logged In: YES
user_id=129364
Thanks, this will be corrected in the next webmin release.