Errors occurred during installation while updating from OJS 2.4.8.2 to OJS 3.0.2

Software Support
1

Hi,

I updated from 2.3.8 to 2.4.8.2 and everything worked fine. Just some custom plugins needed adjustment.

Now, I wanted continue upgrading to 3.0.2. However, the upgrade script fails with
“Errors occurred during installation: Upgrade unsupported. See docs/UPGRADE-UNSUPPORTED for details.”
There is no detailed error message but only this.

I also downloaded a clean code base for OJS 3.0.2, copied the public directory, the submission directory, and the config.inc.php. I tried upgrading again but ended with the same error.

Does anybody has an idea what the problem is?

2

This sounds as if OJS still thinks the database is structured as 2.3.x. Did you run the database upgrade after updating the code to 2.4.8-2? It would have involved the command line php tools/upgrade.php upgrade or using the Web installer with the “Upgrade” link? Did that process complete successfully?

3

Yes, I did. I think it was successful. There was no error message and the OJS was functional.

Is there an easy way to check whether the database structure is successfully converted to 2.4.8.2?

I may have to mention that I have some additional tables used by custom plugins.

4

You can check the current status of the 2.x version as Site Administrator:
User Home → Site Administrator → System Information

5

Thanks, indeed, it stated that it is still version 2.3.8.