Twitter Tools issue when manually updating tweets

I’ve just installed Twitter Tools on CitizenSpace.us — and after posting my first sidebar Tweet, logged out and refreshed to see what it would look like. Apparently the feed hadn’t been pulled in right away, so I logged back in and manually refreshed the feed plugin. In doing so I received a bunch of errors that looked like this and then finished with an error:

Warning: in_array() [function.in-array]: Wrong datatype for second argument in /users/home/factoryjoe/domains/citizenspace.us/public_html/wp-content/plugins/twitter-tools.php on line 334

Warning: Cannot modify header information - headers already sent by (output started at /users/home/factoryjoe/domains/citizenspace.us/public_html/wp-content/plugins/twitter-tools.php:334) in /users/home/factoryjoe/domains/citizenspace.us/public_html/wp-content/plugins/twitter-tools.php on line 542

I went back to the homepage and refreshed and everything was fine, but thought I’d post this in case it helps debug an issue.