Hi Ralf, Thanks for your interest. I see the following recurring error messages in the log: Fri Feb 7 16:16:28 2020 (Europe/Zurich) error OTRS-CGI-10 Search not executed due to invalid value 'Slave%' on field 'MasterSlave'! Fri Feb 7 16:16:28 2020 (Europe/Zurich) error OTRS-CGI-10 Backend MasterSlave is invalid! Re-installed the OTRSMasterSlave package, but this does not seem to have helped. We have not used this package often, so I will try uninstalling this package, and then re-installing it. Ok, after re-installing the OTRSMasterSlave package the errors seem to have disappeared. The next step will be to re-install the update and then explicitly run the scripts/DBUpdate-to-6.pl script. I ran this script when updating from version 5 to 6, and with each fix pack that I have installed vor version 6 (lots of them, from version 03 onward) I have never had to do this before within a version number, but it is worth a try. Regards Rudolf Bargholz Von: Ralf Hildebrandtmailto:Ralf.Hildebrandt@charite.de Gesendet: Freitag, 7. Februar 2020 14:28 An: otrs@lists.otrs.orgmailto:otrs@lists.otrs.org Betreff: Re: [otrs] [ext] Problem upgrading from OTRS 6.0.25 to 6.0.26 * Rudolf Bargholz :

I have tried this a couple of times, going back and forth, and it has worked in each case. Upgrading to patch level 26 results in my no longer being able to log on to OTRS, reverting back to patch level 25 allows me to keep on working in OTRS.

Good. Anything in the logs? (I guess it would log to the same place, and when you go back to the working / old version, you can look at the logs). Ralf Hildebrandt Charit? - Universit?tsmedizin Berlin Gesch?ftsbereich IT | Abteilung Netzwerk Campus Benjamin Franklin (CBF) Haus I | 1. OG | Raum 105 Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 ralf.hildebrandt@charite.de https://www.charite.de --------------------------------------------------------------------- OTRS mailing list: otrs - Webpage: http://otrs.org/ Archive: http://lists.otrs.org/pipermail/otrs To unsubscribe: http://lists.otrs.org/mailman/listinfo/otrs * Rudolf Bargholz :

I have tried this a couple of times, going back and forth, and it has worked in each case. Upgrading to patch level 26 results in my no longer being able to log on to OTRS, reverting back to patch level 25 allows me to keep on working in OTRS.

Good. Anything in the logs? (I guess it would log to the same place, and when you go back to the working / old version, you can look at the logs). Ralf Hildebrandt Charit? - Universit?tsmedizin Berlin Gesch?ftsbereich IT | Abteilung Netzwerk Campus Benjamin Franklin (CBF) Haus I | 1. OG | Raum 105 Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 ralf.hildebrandt@charite.de https://www.charite.de --------------------------------------------------------------------- OTRS mailing list: otrs - Webpage: http://otrs.org/ Archive: http://lists.otrs.org/pipermail/otrs To unsubscribe: http://lists.otrs.org/mailman/listinfo/otrs