@johnny_n –
I’m very sorry to hear this. A few things you can try to help get things working with v2.0:
– Reset permalinks to ‘post-name’ under Settings >> Permalinks in your WordPress dashboard, and then clear your browser cache and reload your site to try again.
– I’m wondering if you wouldn’t mind temporarily deactivating all plugins (including NextGEN) and then clear your browser cache and reactivate NextGEN Gallery only. Does that help? If not, would you also mind temporarily switching to a WP Default Theme like Twenty Thirteen and see if that helps? I know this is an inconvenience, we’re very sorry. But it would help us diagnose if this error may be a plugin/theme incompatibility.
– If either of those actions do not work, try installing our latest beta: http://www.nextgen-gallery.com/nextgen-gallery-latest-beta/ or you might check your server side settings: http://www.nextgen-gallery.com/requirements/
*Note, you can always rollback to our latest working version safely by carefully following these instructions: http://www.nextgen-gallery.com/how-to-rollback-a-version/ until our next update becomes available, which we hope to release by the end of this week.
Hope that helps!
-Becky
