WPMU MailChimp - Error Log Report

Still trying to get this working while Vaughan's suggestion is holding down the fort, nicely, but rather blandly.

After deleting and reinstalling the plugin, I get this after reinstall and activate.

This is the error log.

BE ADVISED: I replaced my real addy with XXX to not post my addy.

[EMAIL:xxx@mac.com] below is actually my correct address in that string.

[July 2, 2013 5:41 PM] [CODE:232] [EMAIL:bitbucket@wpengine.com] - There is no record of "bitbucket@wpengine.com" in the database
[June 29, 2013 11:48 AM] [CODE:104] [EMAIL:xxx@mac.com] - API Key can not be blank
[June 24, 2013 10:07 pm] [CODE:104] [EMAIL:bitbucket@wpengine.com] - API Key can not be blank
[June 24, 2013 10:01 pm] [CODE:104] [EMAIL:bitbucket@wpengine.com] - API Key can not be blank
[June 24, 2013 12:42 am] [CODE:104] [EMAIL:bitbucket@wpengine.com] - API Key can not be blank

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Any help would be greatly appreciated.

Cheers. - Frank