SymptomsMain package of Parallels Plesk Panel 8.6.0 cannot be reinstalled usual way.
The following error is shown when try reinstallation of psa-8.6.0 with "rpm -Uvh" or "dpkg -i":
Unable to upgrade. You have 8.6.0 version installed,
but upgrader is incompatible with this version.
To install new Plesk copy, please move '/usr/local/psa'
to another place manually.
How can I reinstall the package?
ResolutionOn RedHat-like operating systems it is enough to change version number in file /usr/local/psa/version and reinstall package psa-8.6.0 and all hotfixes.
IMPORTANT: if you reinstalled main Plesk package psa-8.6.0 then all hotfixes that were installed later are overwritten and do not have affect. So when you reinstall psa-8.6.0 all hotfixes shown be reinstalled also.
~# cat /usr/local/psa/version
8.6.0 CentOS 5 86080722.00
Change version to "8.4.0 CentOS 5 86080722.00" and reinstall the packages:
~# rpm -Uvh --force /full/path/to/psa-8.6.0-OS.BUILD.rpm
~# rpm -Uvh --force /full/path/to/psa-hotfix4-8.6.0-8.6.0-OS.BUILD.rpm
~# rpm -Uvh --force /full/path/to/psa-hotfix3-8.6.0-OS.BUILD.rpm
~# rpm -Uvh --force /full/path/to/psa-hotfix5-8.6.0-8.6.0-OS.BUILD.rpm
On Debian and Ubuntu you should change version of package "psa" in /var/lib/dpkg/status.
Status: install ok installed
Version: 8.6.0-ubuntu6.06.build86080722.01 <=== change to old version of Parallels Panel, for example 8.4.0-ubuntu6.06.build86080722.01
And then reinstall the package:
~# dpkg -i /full/path/to/psa-8.6.0-OS.BUILD.deb
~# dpkg -i /full/path/to/psa-hotfix4-8.6.0-8.6.0-OS.BUILD.deb
~# dpkg -i /full/path/to/psa-hotfix3-8.6.0-OS.BUILD.deb
~# dpkg -i /full/path/to/psa-hotfix5-8.6.0-8.6.0-OS.BUILD.deb
File /var/lib/dpkg/status is main database of package system. It contains information for all installed packages.
Please remember to backup file /var/lib/dpkg/status before reconfiguration.
The issue affects only reinstallation of base package for Parallels Plesk Panel 8.6. The problem has been fixed since version 9.0.0.