Zikula Community

To share what I learned the hard way:

Upgrading a site using multisites from PN .750 to .762 requires editing any pntables.php file in your parameters/sitename directories, since these are not automatically updated by the upgrade script, and there are some significant changes in pntables.php.

This step should be included in the upgrade instructions.

Without revising the pntables.php file for each site in a multisites installation, you'll see this error when trying to run the upgrade.php script:

ADONewConnection: Unable to load database driver ''

Fatal error: Call to a member function on a non-object in /path-to-your-site/public_html/includes/pnAPI.php on line 317

Turning full error reporting on by uncommenting line 166 of includes/pnAPI.php (in .762) and commenting out line 168 is helpful in tracking down the cause of the error.