svn: E155035: The node ... has a status that has no properties.

I am trying to revert a bad merge and get the following:
$ svn merge -r 689:687 ......
--- Recording mergeinfo for reverse merge of r689 through r688 into '.':
Summary of conflicts:
  Tree conflicts: 13
svn: E155035: The node '/home/bowing/1-workspace/OC/trunk/latest/resources/images/scheduledPatientList/bmDelete.png' has a status that has no properties.

[user1_at_devserver scheduledPatientList]$ svn status                                             <<<< where the file located
A  +  C .
      >   local dir obstruction, incoming dir add upon merge
D  +    bmDelete.png
Summary of conflicts:
  Tree conflicts: 1

[user1_at_devserver images]$ svn status                                                           <<<< where the folder located
A  +  C scheduledPatientList
      >   local dir obstruction, incoming dir add upon merge
D  +    scheduledPatientList/bmDelete.png
D     C worklist
      >   local dir delete, incoming dir delete upon merge
D       worklist/bmCalendar.png
D       worklist/bmRefresh.png
D       worklist/bmSearch.png
Summary of conflicts:
  Tree conflicts: 2

how can I resolve the conflicts?
$ svn --version
svn, version 1.8.11 (r1643975)
   compiled Dec 16 2014, 13:31:09 on x86_64-redhat-linux-gnu

Thanks,James
Received on 2016-03-15 21:00:06 CET