Settings page no longer works with latest version of NextGen Gallery

After years of faithful service the Nivo Slider plugin for NextGen Gallery finally met a breaking issue:

The latest version of NextGen Gallery breaks the settings page:

“Sorry, you are not allowed to access this page.”

After disabling each plugin individually it finally worked when I disabled NGG so I think I found the unfortunate culprit?

Also, it would be nice to have a setting for switching link targets between _blank (the current hard-coded output) and _self.

Thank you for the time you put into this plugin years ago. It went strong for quite some time!

Cheers