diff --git a/Code/AdvancedSettingsGUI.fig b/Code/AdvancedSettingsGUI.fig
index 28bde46..1a0ef90 100644
Binary files a/Code/AdvancedSettingsGUI.fig and b/Code/AdvancedSettingsGUI.fig differ
diff --git a/Code/AdvancedSettingsGUI.m b/Code/AdvancedSettingsGUI.m
index 114aaa1..6abb440 100644
--- a/Code/AdvancedSettingsGUI.m
+++ b/Code/AdvancedSettingsGUI.m
@@ -22,7 +22,7 @@
 
 % Edit the above text to modify the response to help AdvancedSettingsGUI
 
-% Last Modified by GUIDE v2.5 08-Sep-2015 16:21:32
+% Last Modified by GUIDE v2.5 17-May-2016 08:16:51
 
 % Begin initialization code - DO NOT EDIT
 gui_Singleton = 1;
@@ -66,6 +66,11 @@ function AdvancedSettingsGUI_OpeningFcn(hObject, eventdata, handles, varargin)
 handles.PrevSettings = Settings;
 
 %HROIM Method
+if ~isfield(Settings,'DoStrain')
+    Settings.DoStrain = 1;
+end
+set(handles.DoStrain,'Value',Settings.DoStrain);
+
 HROIMMethodList = {'Simulated-Kinematic','Simulated-Dynamic','Real-Grain Ref','Real-Single Ref'};
 set(handles.HROIMMethod, 'String', HROIMMethodList);
 if strcmp(Settings.HROIMMethod,'Simulated')
@@ -129,6 +134,7 @@ function AdvancedSettingsGUI_OpeningFcn(hObject, eventdata, handles, varargin)
 
 %Update Components
 HROIMMethod_Callback(handles.HROIMMethod,eventdata,handles);
+DoStrain_Callback(handles.DoStrain, eventdata, handles);
 handles = guidata(hObject);
 DoDD_Callback(handles.DoDD, eventdata, handles);
 handles = guidata(hObject);
@@ -602,5 +608,29 @@ function EnableProfiler_Callback(hObject, eventdata, handles)
 
 % Hint: get(hObject,'Value') returns toggle state of EnableProfiler
 handles.Settings.EnableProfiler = get(hObject,'Value');
+guidata(hObject,handles);
+
+% --- Executes on button press in DoStrain.
+function DoStrain_Callback(hObject, eventdata, handles)
+% hObject    handle to DoStrain (see GCBO)
+% eventdata  reserved - to be defined in a future version of MATLAB
+% handles    structure with handles and user data (see GUIDATA)
 
+% Hint: get(hObject,'Value') returns toggle state of DoStrain
+if get(hObject,'Value')
+    set(handles.HROIMMethod,'Enable','on');
+    set(handles.HROIMedit,'Enable','on');
+    set(handles.StandardDeviation,'Enable','on');
+    set(handles.MisoTol,'Enable','on');
+    set(handles.GrainRefType,'Enable','on');
+    HROIMMethod_Callback(handles.HROIMMethod, eventdata, handles);
+else
+    set(handles.HROIMMethod,'Enable','off');
+    set(handles.HROIMedit,'Enable','off');
+    set(handles.StandardDeviation,'Enable','off');
+    set(handles.MisoTol,'Enable','off');
+    set(handles.GrainRefType,'Enable','off');
+end
+handles.Settings.DoStrain = get(hObject,'Value');
+guidata(hObject,handles);
 
diff --git a/Code/GetHROIMDefaultSettings.m b/Code/GetHROIMDefaultSettings.m
index 5106101..7e100cb 100644
--- a/Code/GetHROIMDefaultSettings.m
+++ b/Code/GetHROIMDefaultSettings.m
@@ -32,6 +32,7 @@
 
 %% Advanced Settings
 %HROIM Settings
+Settings.DoStrain = 1;
 Settings.HROIMMethod = 'Real'; %{'Simulated', 'Real'}, %Someday will add Hybrid
 Settings.IterationLimit = 6;
 Settings.RefImageInd = 0;
diff --git a/Code/HREBSDMain.m b/Code/HREBSDMain.m
index 77015c6..e1a0cef 100644
--- a/Code/HREBSDMain.m
+++ b/Code/HREBSDMain.m
@@ -225,13 +225,18 @@
 
 %% Run Analysis
 %Use a parfor loop if allowed multiple processors.
-tic
+if ~isfield(Settings,'DoStrain')
+    Settings.DoStrain = 1;
+end
+
 %Initialize Variables
 F = repmat({zeros(3)},1,Settings.ScanLength);
-g = repmat({zeros(3,1)},1,Settings.ScanLength);
+g = repmat({zeros(3)},1,Settings.ScanLength);
 U = repmat({zeros(3)},1,Settings.ScanLength);
 SSE = repmat({0},1,Settings.ScanLength);
-
+XX = repmat({zeros(Settings.NumROIs,3)},1,Settings.ScanLength);
+if Settings.DoStrain
+tic
 if Settings.DoParallel > 1
     NumberOfCores = Settings.DoParallel;
     try
@@ -301,6 +306,7 @@ commented out this (outputs strain matrix - I think - DTF 5/15/14)
 end
 Time = toc/60;
 if Settings.DisplayGUI; disp(['Time to finish: ' num2str(Time) ' minutes']); end;
+end
 
 %% Save output and write to .ang file
 for jj = 1:Settings.ScanLength
@@ -335,7 +341,6 @@ commented out this (outputs strain matrix - I think - DTF 5/15/14)
         data.phi1rn{jj} = phi1;
         data.PHIrn{jj} = PHI;
         data.phi2rn{jj} = phi2;
-        Settings.XX = XX;
         
     end
     
@@ -343,6 +348,7 @@ commented out this (outputs strain matrix - I think - DTF 5/15/14)
     Settings.NewAngles(jj,1:3) = [phi1 PHI phi2];
     
 end
+Settings.XX = XX;
 if strcmp(Settings.ScanType,'L')
     
     data.phi1rn = LFileVals{1};