radiusmedia on "General Form Submit"

Hi there, I noticed any general form submission in wordpress especially frontend themes, there is an error that appears.

Warning: trim() expects parameter 1 to be string, array given in /Volumes/HDD2/RadiusMedia/TheLocalArtist/dev4/wp-includes/query.php on line 1479

Warning: strip_tags() expects parameter 1 to be string, array given in /Volumes/HDD2/RadiusMedia/TheLocalArtist/dev4/wp-includes/formatting.php on line 1059

This happen when I submit a standard post form, also noticed it happens in the latest wordpress theme. Is this a known issue.

Any help would be greatly appreciated