Ok, so I appear to have fubared this one up something fierce.
As of this morning I had version 2.40 working fine, with no issues.
I attempted to update to the latest version with 2 other plugins, and in doing so ended up with the "0 is a protected WP option and may not be modified" error that took my entire site down.
I removed the plugin for NGFB by deleting the plugin folder and everything came back up. I updated each of the other plugins in question individually, and the second time 3.1.1 installed correctly. However, when activating, I am getting the warning message that
WordPress returned an error when reading the 'ngfb_options' array from the database.
Moreover, the settings page once active does not go beyond the Default Image ID line (the rest of the settings are not loading), and any attempt to change them results in:
Using $this when not in object context in /wp-content/plugins/nextgen-facebook/nextgen-facebook.php on line 402"
Attempting to put 2.4 back generates an error
Warning: array_key_exists(): The second argument should be either an array or an object in wp-content/plugins/nextgen-facebook/nextgen-facebook.php on line 277
2.41 generates a similar error:
Warning: array_key_exists() expects parameter 2 to be array, wp-content/plugins/nextgen-facebook/nextgen-facebook.php on line 275
What should be next step be here? Thanks.