Error in "reference to non-existent field"

        cDat = get(h.label,'Value');
        
        speLabels = get(h.popupSpeModSel,'String');  
        if get(h.popupSpeModSel,'Value') == 1
            selSpe = 1:size(data{cDat}.spe,1);
        else
            selSpe = get(h.popupSpeModSel,'Value')-1;
        end
        
        if isempty(ref{1}.signal)
            id = 0;
        else
            id = length(ref);
        end
        
        for k2 = selSpe
            id = id+1;
            ref{id}.label = ['r' num2str(id) ': ' data{cDat}.label '_' speLabels{k2+1}];
            ref{id}.wl =  data{cDat}.wl;
            ref{id}.signal =  data{cDat}.spe(k2,:)';
        end

        updateRef
        set(h.popupRefList,'Value',id);
	end

	function callback_Spe_Sld(varargin)
		% by FS 16/11/2015
		cDat = get(h.label,'Value');				% idx of dataset
        
		xdata = data{cDat}.wl;
		tAx   = data{cDat}.t;
		tUnit = get(h.timeUnits, 'String');
		ydata = data{cDat}.dtt;
		
		fh = figure(); hold all; ax = gca; set(fh,'Name','Spectra Slider');
		pos = get(fh,'Position');
		pl = plot(xdata, ydata(:,1));
		set(ax,'ylim',[min(min(ydata)), max(max(ydata))]);
		xlabel('Wavelength (nm)');
		ylabel('\Delta T/T');
		title(data{cDat}.fname,'Interpreter','none');
		
		leg = legend(sprintf('%d %s',tAx(1),tUnit));

When I try to save my file using this function,

Reference to non-existent field 'popupSpeModSel'.

Error in speAnalysis/callback_Spe_Save2Ref (line 2325)
        speLabels = get(h.popupSpeModSel,'String');
 
Error while evaluating UIControl Callback.

This error always pop up. It was fine yesterday but havent worked today.

[TADA]

I Would Say That Most Likely The Name Of That UI Component Changed From popupSpeModSel To Something Else.

[Chengye Huang]

Thanks for comment!

Do you know how to fix this?

[Geoff Hayes]

Chengye - look for the code that creates this popup control and you should be able to determine what the new name is.