diff --git a/beamtime/nappBackground.m b/beamtime/nappBackground.m
index 012fcab..ee6efe5 100644
--- a/beamtime/nappBackground.m
+++ b/beamtime/nappBackground.m
@@ -106,6 +106,11 @@ for ii = 1:size(p.Results.DataTable(p.Results.tableSelection,:),1)
                 clearvars excludedPoints 
                 excludedPointsZwei = excludedata( xData, yData, 'domain',[xData(1) p.Results.energyStart(2)] );
                 excludedPoints = excludedPointsEins & excludedPointsZwei;
+            elseif size(p.Results.energyStart,2) ==2 && size(p.Results.energyEnd,2) ==2
+                excludedPointsEins = excludedPoints;
+                clearvars excludedPoints 
+                excludedPointsZwei = excludedata( xData, yData, 'domain',[p.Results.energyStart(2) p.Results.energyEnd(2)] );
+                excludedPoints = excludedPointsEins & excludedPointsZwei;
             end
             
             opts = fitoptions( 'Method', 'NonlinearLeastSquares','Exclude', ~excludedPoints );
@@ -224,8 +229,8 @@ else
     DataTable(p.Results.tableSelection,:).(p.Results.tableVariable)                  = tmp;
 end
 % write log to table
-DataTable.logBackgroundMode(p.Results.tableSelection,:)                  = cellstr(repmat(p.Results.mode,size(p.Results.DataTable(p.Results.tableSelection,:),1),1));
-DataTable.logBackgroundRange(p.Results.tableSelection,:)               = repmat([p.Results.energyStart(1) p.Results.energyEnd],size(p.Results.DataTable(p.Results.tableSelection,:),1),1);
-DataTable.logBackgroundDate(p.Results.tableSelection,:)                   = cellstr(repmat(datestr(now),size(p.Results.DataTable(p.Results.tableSelection,:),1),1));
+DataTable.logBackgroundMode(p.Results.tableSelection,:)                     = cellstr(repmat(p.Results.mode,size(p.Results.DataTable(p.Results.tableSelection,:),1),1));
+DataTable.logBackgroundRange(p.Results.tableSelection,:)                    = repmat([p.Results.energyStart(1) p.Results.energyEnd(1)],size(p.Results.DataTable(p.Results.tableSelection,:),1),1);
+DataTable.logBackgroundDate(p.Results.tableSelection,:)                     = cellstr(repmat(datestr(now),size(p.Results.DataTable(p.Results.tableSelection,:),1),1));
 
 end
\ No newline at end of file
diff --git a/beamtime/nappCombineSpectra.m b/beamtime/nappCombineSpectra.m
index d5b4ed5..39b1fdc 100644
--- a/beamtime/nappCombineSpectra.m
+++ b/beamtime/nappCombineSpectra.m
@@ -90,10 +90,10 @@ end
 
 combinedSpectrum(:,1)             = xq;
 if contains(p.Results.mode,'sum')
-    combinedSpectrum(:,2)             = sum(vq,2);
+    combinedSpectrum(:,2)             = sum(vq,2,'omitnan');
 elseif contains(p.Results.mode,'average')
-    combinedSpectrum(:,2)             = mean(vq,2);
-    combinedSpectrum(:,3)             = std(vq,0,2);
+    combinedSpectrum(:,2)             = mean(vq,2,'omitnan');
+    combinedSpectrum(:,3)             = std(vq,0,2,'omitnan');
 elseif contains(p.Results.mode,'subtract')
     disp('Not supported yet') % FIXME: subtraction is not implemented yet.
 end
diff --git a/beamtime/nappPlot.m b/beamtime/nappPlot.m
index d36d202..8a5aa69 100644
--- a/beamtime/nappPlot.m
+++ b/beamtime/nappPlot.m
@@ -373,7 +373,11 @@ if contains(p.Results.tableVariable,'spectrum')
                 if ~any(existColumn)
                     title([{p.Results.DataTable(p.Results.tableSelection,:).name{ii} p.Results.DataTable(p.Results.tableSelection,:).lastModifiedDatestr{ii}}],'Interpreter','none')
                 else
-                    title([{p.Results.DataTable(p.Results.tableSelection,:).name{ii}  p.Results.DataTable(p.Results.tableSelection,:).sample{ii}  p.Results.DataTable(p.Results.tableSelection,:).lastModifiedDatestr{ii}}] ,'Interpreter','none')
+                    try
+                        title([{p.Results.DataTable(p.Results.tableSelection,:).name{ii}  p.Results.DataTable(p.Results.tableSelection,:).sample{ii}  p.Results.DataTable(p.Results.tableSelection,:).lastModifiedDatestr{ii}}] ,'Interpreter','none')
+                    catch
+                        title([{p.Results.DataTable(p.Results.tableSelection,:).name{ii}  p.Results.DataTable(p.Results.tableSelection,:).sample{ii}}] ,'Interpreter','none')
+                    end
                 end
             end