Error: There are more then one main_node for objectID: 67 	Apr 09 2013 16:20:56

array(2) {
  [0]=>
  array(1) {
    ["node_id"]=>
    string(2) "73"
  }
  [1]=>
  array(1) {
    ["node_id"]=>
    string(2) "74"
  }
}

Steps:
1 - log into admin2 with "Admin" account
2 - click at "Content structure" (top menu)
3 - Add 2 folders with names "Folder 1" and "Folder 2"
4 - create an article with name "Art for test" and summary "This is the summary"
5 - remove "Art for test" (check the "move for trash" checkbox if not checked already)
6 - click on trash link (left menu)
7 - click on the pencil in the right side "Art for test" row
8 - choose "Select a location"
9 - check both of the folders "Folder 1" and "Folder 2"
10- click "OK" 
11- verify on debug redirect the error mentioned above

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