I've just upgraded to the latest version of NextGen Gallery and now my galleries do not show. I'm getting a Page Not Found error. If I uncheck the Deactivate gallery page link in the Gallery settings, clicking on the links to the galleries simply refreshes the gallery page without showing the requested gallery. If I uncheck the Activate Permalinks option in the General Options, then the galleries show but without a title or anything.
I have tried clicking the Save button to update the Permalinks, which I gather is the way to do this, but it has no effect and everything remains the same.
Also, the styling of my gallery page seems to have been lost.
Any help greatly appreciated.