I resolved this issue myself. Discovered a setting in Authorize.net payment fields that set this as required, so it was not the plugin’s fault. Unchecking that box resolved the issue.
Yes.. why would you do this, and how does it affect those of us who use Infinite WP???
I have this same error occuring. None of the widgets work, but leave this error in the admin and on the blog. Fresh install of latest version. Not calling any other ads but this one from the sidebar.
Please advise?
Thanks,
Rich