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[Tomas Groth <1532169@xxxxxxxxxxxxxxxxxx>]

** Changed in: openlp
       Status: Confirmed => In Progress

** Changed in: openlp
     Assignee: (unassigned) => Tomas Groth (tomasgroth)

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https://bugs.launchpad.net/bugs/1532169

Title:
  Expanding or Collapsing a Song in ServiceManager raises an Exception

Status in OpenLP:
  In Progress

Bug description:
  When expanding or Collapsing a Song in ServiceManager a IndexError occurs. 
  This only happens when using the buttons in the Service Manager. 
  I guess the error occurs because of the -1 when accessing the items.
  However the -1 is being used 5 times all over the class.
  I'm not sure about the reason behind the -1 in the first place

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