Error during update 7.5.2 to 7.5.3 FreeBSD 4.9

[timluu]

I hope some one can help. I am getting error while updating from 7.5.2 to 7.5.3. I would appreciate any help you can give. Thanks in advance. Here is the update log:

Checking for the system groups and users necessary for Mailman...
Trying to Set up right mailman UID/GID (91)... pwd_mkdb: corrupted entry
pwd_mkdb: at line #90
pwd_mkdb: /etc/master.passwd: Inappropriate file type or format done Checking for the group 'mailman'...
Group 'mailman' already exists

Checking for the user 'mailman'...

ERROR: It seems there is user mailman in your system
but with another UID than Plesk uses (91)
or the mailman is in the primary group, but this
group is not that Plesk uses.
Sorry, but this situation has not been workarounded yet.
Please, contact [email protected]

Exiting...

The attempt to upgrade
from version 7.5.2 to Plesk 7.5.3 has failed.

 

[wagnerch]

I would look at the /etc/master.passwd file around line 90. It is complaining that it is a malformed line.