Plugin errors displaying on page

Using this plugin, I’m getting some occasional warnings showing on the page. Is there a way to solve the problem that generates these warnings, or at the very least, suppress them from displaying on the page somehow?

I’ve suppressed the domain, server & screen names shown in the url for the privacy of the people I’m working with here, but just so you know, that’s not the issue – it’s been working fine with the twitter user normally.

Warning: DOMDocument::load(http://api.twitter.com/1/statuses/user_timeline.rss?screen_name=****) [domdocument.load]: failed to open stream: HTTP request failed! HTTP/1.0 400 Bad Request in ****/wp-content/plugins/twitter2posts/lib/cron.php on line 19

Warning: DOMDocument::load() [domdocument.load]: I/O warning : failed to load external entity “http://api.twitter.com/1/statuses/user_timeline.rss?screen_name=****” in ****/wp-content/plugins/twitter2posts/lib/cron.php on line 19

Thanks for your help

http://ww.wp.xz.cn/extend/plugins/twitter2posts/