Error linking with Google Analytics

I am not a programmer. Encountered an error when we tried to link our MailChimp to our Google Analytics (at least, I think that is what caused the problem). Site locked out all users who weren’t logged in. Immediately resolved after deactivating MailChimp Widget, but returns after activation. Logged in users received this error:

Warning: spl_autoload() [function.spl-autoload]: Unable to access sicaptcha.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access stbblock.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access specialtextboxes.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access special_text.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access specialtextboxesadmin.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access wp_user_search.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: session_start() [function.session-start]: Cannot send session cache limiter – headers already sent (output started at /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php:37) in /home/gchope/public_html/wp-content/plugins/wp-e-commerce/wpsc-core/wpsc-constants.php on line 17

Warning: spl_autoload() [function.spl-autoload]: Unable to access all_in_one_seo_pack.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access wpfb_widget.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access phpflickr.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access phpflickr_pager.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access members_load.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access wpfb_core.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access jetpack.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access jetpack.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access wpfb_adminlite.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access wpfb_adminlite.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access wpfb_admin.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access wpfb_admin.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access wpfb_item.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access wpfb_file.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access wpfb_category.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access wpfb_fileutils.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

Warning: spl_autoload() [function.spl-autoload]: Unable to access _wp_editors.class.php in /home/gchope/public_html/wp-content/plugins/mailchimp-widget/mailchimp-widget.php on line 37

http://wordpress.org/extend/plugins/mailchimp-widget/