robustifying against failure in dmr loading

loadPatient.py

@@ -68,8 +68,11 @@ def load(db,fb,fbDMR,iDicom,lDicom,project,label):
                         'frameOfReferenceInstanceUid':None}
 
     dmrVolumes=iDicom.loadVolumes(fbDMR,project,iPath,dicomReadFilter)
-    dmrNode=dmrVolumes[0]['node']
-    dmrNode.SetName(label+'_DMR')
+    try:
+        dmrNode=dmrVolumes[0]['node']
+        dmrNode.SetName(label+'_DMR')
+    except IndexError:
+        return returnObj
 
     #load CT-RS
     ctrsFilter={'variable':'type','value':'CT-RS','oper':'eq'}