lane86

This worked:

– Deactivate the Robots Meta plugin.
– Delete the plugin files.
– Download Robots meta v 3.0.11 from here:
http://wordpress.org/extend/plugins/robots-meta/download/
direct link:
http://downloads.wordpress.org/plugin/robots-meta.3.0.11.zip
– upload this version, and activate.
– test on a page.
– upgrade plugin automatically.

Thanks Webstractions for linking to that topic.