@thestewartofny, @lusohouse,
Would you mind, confirming for us that error persists after:
– disable all browser extensions/plugins/or add-ons
– Temporarily switching to WordPress default theme > clear browser cache & reload your site
– Deactivate all plugins (including NextGEN Gallery) > clear browser cache > re-activate NextGEN Gallery only & reload your site
Do any of those action steps help? I know this can be a big inconvenience, we’re very sorry – but since this is not happening for everyone, this does help tell us if there is a plugin/theme conflict. Or a browser related issue.
-Becky