Upgrade failed: Missing Dependency psa-proftpd

Symptoms

Plesk upgrade failed with error:

CONFIG_TEXT: psa-proftpd-xinetd-1.3.5-6.el5.art.x86_64 from installed has depsolving problems
--> Missing Dependency: psa-proftpd = 1.3.5-6.el5.art is needed by package psa-proftpd-xinetd-1.3.5-6.el5.art.x86_64 (installed)
Exception: Failed to solve dependencies:
Missing Dependency: psa-proftpd = 1.3.5-6.el5.art is needed by package psa-proftpd-xinetd-1.3.5-6.el5.art.x86_64 (installed)

The following commands show that psa-proftpd package is installed through non-Plesk repository:

# rpm -qi psa-proftpd-1.3.4c-4.el5.art
# rpm -qi psa-proftpd-xinetd-1.3.4c-4.el5.art

FTP service also does not work:

CONFIG_TEXT: 421 Service not available, remote server has closed connection

Cause

Packages installed from third-party repository conflicts with Plesk packages.

Resolution

1. Connect to the server via SSH.

2. Remove psa-proftpd packages from Atomic repository:

   # rpm -e psa-proftpd-xinetd-1.3.5-6.el5.art --nodeps
   # rpm -e psa-proftpd-1.3.5-6.el5.art --nodeps

3. Make sure Atomic repository is disabled or add package to exclusion list:

   # echo 'exclude=psa-proftpd*' >> /etc/yum.repos.d/atomic.repo

4. Install ProFTP service from Web Hosting categorie using Plesk installer:

   # plesk installer