Same here….Fatal error:
Fatal error: Cannot unset string offsets in /home/…./plugins/advertising-manager/lib/Advman/Upgrade.php on line 426
I had this problem too. I had upgraded from a much older version to the latest one, and it seems that it did not remove the old options record from the wp_options table. Here’s how I fixed it: Uninstalled the plugin, I then went into the database and removed the record (option_name = “GoogleAnalyticsPP”), reinstalled. The settings now saved correctly and I didn’t get all ‘1’s in the option fields. Goog Luck 🙂
