After clicking the Download CSV link, and get a successful download, any page I select next throws the following errors:

    * warning: Missing argument 1 for signup_form() in /data/10/0/131/62/783062/user/801922/htdocs/sites/default/modules/signup/signup.module on line 1091.
    * warning: Invalid argument supplied for foreach() in /data/10/0/131/62/783062/user/801922/htdocs/modules/node/node.module on line 561.
    * warning: implode() [function.implode]: Invalid arguments passed in /data/10/0/131/62/783062/user/801922/htdocs/modules/node/node.module on line 565.
    * user warning: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 query: SELECT n.nid, n.vid, n.type, n.status, n.created, n.changed, n.comment, n.promote, n.sticky, r.timestamp AS revision_timestamp, r.title, r.body, r.teaser, r.log, r.format, u.uid, u.name, u.picture, u.data FROM node n INNER JOIN users u ON u.uid = n.uid INNER JOIN node_revisions r ON r.vid = n.vid WHERE in /data/10/0/131/62/783062/user/801922/htdocs/includes/database.mysql.inc on line 174.

Any thoughts?