david_ma

The 150×150 thumbnail is no longer accepted by facebook.

Tiny og:image: All the images referenced by og:image must be at least 200px in both dimensions. Please check all the images with tag og:image in the given url and ensure that it meets the minimum specification.

Can you change to use another version of the image?

WP 3.0.
I get this error on activating the plugin:
The plugin generated 173 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.

aMember and wishlish member are popular with my members.

David
Membership Academy

You can also use amember which will give you a much more sophisticated solution including an affiliate program and drip feed contents.
Check out Membership Academy for more info. – My site.

David