diff --git a/Models/Models23a/Models23a/BuildRefrigerator.mlx b/Models/Models23a/BuildRefrigerator.mlx
similarity index 100%
rename from Models/Models23a/Models23a/BuildRefrigerator.mlx
rename to Models/Models23a/BuildRefrigerator.mlx
diff --git a/Models/Models23a/Models23a/Condenser_2Pass.slx b/Models/Models23a/Condenser_2Pass.slx
similarity index 100%
rename from Models/Models23a/Models23a/Condenser_2Pass.slx
rename to Models/Models23a/Condenser_2Pass.slx
diff --git a/Models/Models23a/Models23a/ModelFridge.slx b/Models/Models23a/ModelFridge.slx
similarity index 100%
rename from Models/Models23a/Models23a/ModelFridge.slx
rename to Models/Models23a/ModelFridge.slx
diff --git a/Models/Models23a/Models23a/ModelFridgeCompressor.slx b/Models/Models23a/ModelFridgeCompressor.slx
similarity index 100%
rename from Models/Models23a/Models23a/ModelFridgeCompressor.slx
rename to Models/Models23a/ModelFridgeCompressor.slx
diff --git a/Models/Models23a/Models23a/ModelFridgeCondenser.slx b/Models/Models23a/ModelFridgeCondenser.slx
similarity index 100%
rename from Models/Models23a/Models23a/ModelFridgeCondenser.slx
rename to Models/Models23a/ModelFridgeCondenser.slx
diff --git a/Models/Models23a/Models23a/ModelFridgeEvapCompCond.slx b/Models/Models23a/ModelFridgeEvapCompCond.slx
similarity index 100%
rename from Models/Models23a/Models23a/ModelFridgeEvapCompCond.slx
rename to Models/Models23a/ModelFridgeEvapCompCond.slx
diff --git a/Models/Models23a/Models23a/ModelFridgeEvaporator.slx b/Models/Models23a/ModelFridgeEvaporator.slx
similarity index 100%
rename from Models/Models23a/Models23a/ModelFridgeEvaporator.slx
rename to Models/Models23a/ModelFridgeEvaporator.slx
diff --git a/Models/Models23a/Models23a/ModelFridge_WithQuality.slx b/Models/Models23a/ModelFridge_WithQuality.slx
similarity index 100%
rename from Models/Models23a/Models23a/ModelFridge_WithQuality.slx
rename to Models/Models23a/ModelFridge_WithQuality.slx
diff --git a/Models/Models23a/Models23a/Model_Fridge.mlx b/Models/Models23a/Model_Fridge.mlx
similarity index 100%
rename from Models/Models23a/Models23a/Model_Fridge.mlx
rename to Models/Models23a/Model_Fridge.mlx
diff --git a/Models/Models23a/Models23a/ValveHarness.slx b/Models/Models23a/ValveHarness.slx
similarity index 100%
rename from Models/Models23a/Models23a/ValveHarness.slx
rename to Models/Models23a/ValveHarness.slx
diff --git a/Models/Models23a/Models23a/Work_demo.slx b/Models/Models23a/Work_demo.slx
similarity index 100%
rename from Models/Models23a/Models23a/Work_demo.slx
rename to Models/Models23a/Work_demo.slx
diff --git a/Models/Models23a/Models23a/step1_EvaporatorHarness.slx b/Models/Models23a/step1_EvaporatorHarness.slx
similarity index 100%
rename from Models/Models23a/Models23a/step1_EvaporatorHarness.slx
rename to Models/Models23a/step1_EvaporatorHarness.slx
diff --git a/Models/Models23a/Models23a/step2_CompressorHarness.slx b/Models/Models23a/step2_CompressorHarness.slx
similarity index 100%
rename from Models/Models23a/Models23a/step2_CompressorHarness.slx
rename to Models/Models23a/step2_CompressorHarness.slx
diff --git a/Models/Models23a/Models23a/step3_CondenserHarness.slx b/Models/Models23a/step3_CondenserHarness.slx
similarity index 100%
rename from Models/Models23a/Models23a/step3_CondenserHarness.slx
rename to Models/Models23a/step3_CondenserHarness.slx
diff --git a/Models/Models23a/Models23a/step4_EvapCompCondHarness.slx b/Models/Models23a/step4_EvapCompCondHarness.slx
similarity index 100%
rename from Models/Models23a/Models23a/step4_EvapCompCondHarness.slx
rename to Models/Models23a/step4_EvapCompCondHarness.slx
diff --git a/Models/Models23a/Models23a/step5_ValveHarness.slx b/Models/Models23a/step5_ValveHarness.slx
similarity index 100%
rename from Models/Models23a/Models23a/step5_ValveHarness.slx
rename to Models/Models23a/step5_ValveHarness.slx
diff --git a/Models/Models23a/Models23a/step6_ClosedLoopHarness.slx b/Models/Models23a/step6_ClosedLoopHarness.slx
similarity index 100%
rename from Models/Models23a/Models23a/step6_ClosedLoopHarness.slx
rename to Models/Models23a/step6_ClosedLoopHarness.slx
diff --git a/Models/Models23a/Models23a/step7_ClosedLoopFixDensityHarness.slx b/Models/Models23a/step7_ClosedLoopFixDensityHarness.slx
similarity index 100%
rename from Models/Models23a/Models23a/step7_ClosedLoopFixDensityHarness.slx
rename to Models/Models23a/step7_ClosedLoopFixDensityHarness.slx
diff --git a/Utilities/ProjectShutdown.m b/Utilities/ProjectShutdown.m
new file mode 100644
index 0000000..08d02d5
--- /dev/null
+++ b/Utilities/ProjectShutdown.m
@@ -0,0 +1,35 @@
+function ProjectShutdown
+% Open the overview file
+
+% Set up check for version number
+proj = currentProject;
+myPath = fullfile(proj.RootFolder,"Models");
+if isMATLABReleaseOlderThan("R2023b")
+    cd(proj.RootFolder)
+    try
+        if exist(fullfile("Utilities","OldVersions","MainMenuNew.mlx"),"file")
+            movefile("MainMenu.mlx", fullfile("Utilities","OldVersions","MainMenuOld.mlx"))
+            movefile(fullfile("Utilities","OldVersions","MainMenuNew.mlx"),fullfile(proj.RootFolder,"MainMenu.mlx"))
+        end
+    catch 
+        disp("Failed to move MainMenu.mlx.")
+    end
+    try
+        if exist(fullfile("Utilities","Oldersions","READMENew.mlx"),"file")
+            movefile("README.mlx", fullfile("Utilities","OldVersions","READMEOld.mlx"))
+            movefile(fullfile("Utilities","Oldersions","READMENew.mlx"),fullfile(proj.RootFolder,"README.mlx"))
+        end
+    catch
+        disp("Failed to move README.mlx.")
+    end
+    if isMATLABReleaseOlderThan("R2022b")
+        % Nothing to change
+    elseif isMATLABReleaseOlderThan("R2023a")
+        rmpath(fullfile(myPath,"Models22b"))
+    else
+        rmpath(fullfile(myPath,"Models23a"))
+    end
+else
+    rmpath(fullfile(myPath,"Models23a"))
+end
+end
\ No newline at end of file
diff --git a/Utilities/StartupScript.m b/Utilities/Startup.m
similarity index 91%
rename from Utilities/StartupScript.m
rename to Utilities/Startup.m
index e14c4db..fbe4575 100644
--- a/Utilities/StartupScript.m
+++ b/Utilities/Startup.m
@@ -27,16 +27,16 @@
     if isMATLABReleaseOlderThan("R2022b")
         disp(str + " so it may not run this example which was built in R2022b.")
     elseif isMATLABReleaseOlderThan("R2023a")
-        addpath(myPath+filesep+"Models22b")
+        addpath(fullfile(myPath,"Models22b"))
     else
         % Fix path to run R2023a files
-        addpath(myPath+filesep+"Models23a")
+        addpath(fullfile(myPath,"Models23a"))
     end
 else
     % Fix path to run R2023a files, for now?
     disp(str + " and this was designed using R2022b.")
     disp("If you find errors, please report them to onlineteaching@mathworks.com")
-    addpath(myPath+filesep+"Models23a")
+    addpath(fullfile(myPath,"Models23a"))
 end
 StartUpFcn
 end
\ No newline at end of file
diff --git a/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/NtYHK68HKCj2dObF23GaX4B3z68d.xml b/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/NtYHK68HKCj2dObF23GaX4B3z68d.xml
deleted file mode 100644
index 89b9021..0000000
--- a/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/NtYHK68HKCj2dObF23GaX4B3z68d.xml
+++ /dev/null
@@ -1,2 +0,0 @@
-<?xml version='1.0' encoding='UTF-8'?>
-<Info File="Utilities/StartupScript.m" GroupUUID="" Icon="" Name="StartupScript" Type="StartUp" Visible="0"/>
\ No newline at end of file
diff --git a/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/NtYHK68HKCj2dObF23GaX4B3z68p.xml b/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/NtYHK68HKCj2dObF23GaX4B3z68p.xml
deleted file mode 100644
index 9d2da56..0000000
--- a/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/NtYHK68HKCj2dObF23GaX4B3z68p.xml
+++ /dev/null
@@ -1,2 +0,0 @@
-<?xml version='1.0' encoding='UTF-8'?>
-<Info location="0bdcbb18-a4b8-4b11-a321-2b1689f7305a" type="EntryPoint"/>
\ No newline at end of file
diff --git a/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/SkoAdqI2Fh9TocZ55aP1wbz4t8gd.xml b/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/SkoAdqI2Fh9TocZ55aP1wbz4t8gd.xml
new file mode 100644
index 0000000..e862667
--- /dev/null
+++ b/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/SkoAdqI2Fh9TocZ55aP1wbz4t8gd.xml
@@ -0,0 +1,2 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<Info File="Utilities/ProjectShutdown.m" GroupUUID="" Icon="" Name="ProjectShutdown" Type="Shutdown" Visible="0"/>
\ No newline at end of file
diff --git a/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/SkoAdqI2Fh9TocZ55aP1wbz4t8gp.xml b/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/SkoAdqI2Fh9TocZ55aP1wbz4t8gp.xml
new file mode 100644
index 0000000..e697e75
--- /dev/null
+++ b/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/SkoAdqI2Fh9TocZ55aP1wbz4t8gp.xml
@@ -0,0 +1,2 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<Info location="e6416641-f09d-4367-a068-040d06e8894b" type="EntryPoint"/>
\ No newline at end of file
diff --git a/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/jrDcN-cJxOIYLwTjafDBwWvhO20d.xml b/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/jrDcN-cJxOIYLwTjafDBwWvhO20d.xml
new file mode 100644
index 0000000..a1ed4ba
--- /dev/null
+++ b/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/jrDcN-cJxOIYLwTjafDBwWvhO20d.xml
@@ -0,0 +1,2 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<Info File="Utilities/Startup.m" GroupUUID="" Icon="" Name="Startup" Type="StartUp" Visible="0"/>
\ No newline at end of file
diff --git a/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/jrDcN-cJxOIYLwTjafDBwWvhO20p.xml b/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/jrDcN-cJxOIYLwTjafDBwWvhO20p.xml
new file mode 100644
index 0000000..3291884
--- /dev/null
+++ b/resources/project/KAXfQgCar2Yb8zOxgvf9hdmLP1E/jrDcN-cJxOIYLwTjafDBwWvhO20p.xml
@@ -0,0 +1,2 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<Info location="3ecdb3c9-e943-4096-ad17-43aa8c880617" type="EntryPoint"/>
\ No newline at end of file
diff --git a/resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/L27GnRVudTeNT9LngGtGhVPDrdUp.xml b/resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/L27GnRVudTeNT9LngGtGhVPDrdUp.xml
deleted file mode 100644
index cddb3da..0000000
--- a/resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/L27GnRVudTeNT9LngGtGhVPDrdUp.xml
+++ /dev/null
@@ -1,2 +0,0 @@
-<?xml version='1.0' encoding='UTF-8'?>
-<Info location="StartupScript.m" type="File"/>
\ No newline at end of file
diff --git a/resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/L27GnRVudTeNT9LngGtGhVPDrdUd.xml b/resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/ZTr3GAe6p03ZVs2FdKKE0JsiFMQd.xml
similarity index 100%
rename from resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/L27GnRVudTeNT9LngGtGhVPDrdUd.xml
rename to resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/ZTr3GAe6p03ZVs2FdKKE0JsiFMQd.xml
diff --git a/resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/ZTr3GAe6p03ZVs2FdKKE0JsiFMQp.xml b/resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/ZTr3GAe6p03ZVs2FdKKE0JsiFMQp.xml
new file mode 100644
index 0000000..31a64a5
--- /dev/null
+++ b/resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/ZTr3GAe6p03ZVs2FdKKE0JsiFMQp.xml
@@ -0,0 +1,2 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<Info location="ProjectShutdown.m" type="File"/>
\ No newline at end of file
diff --git a/resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/laEXQ8S8ZfculNP7NEgbVD64dicd.xml b/resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/laEXQ8S8ZfculNP7NEgbVD64dicd.xml
new file mode 100644
index 0000000..7a6326b
--- /dev/null
+++ b/resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/laEXQ8S8ZfculNP7NEgbVD64dicd.xml
@@ -0,0 +1,6 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<Info>
+    <Category UUID="FileClassCategory">
+        <Label UUID="design"/>
+    </Category>
+</Info>
\ No newline at end of file
diff --git a/resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/laEXQ8S8ZfculNP7NEgbVD64dicp.xml b/resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/laEXQ8S8ZfculNP7NEgbVD64dicp.xml
new file mode 100644
index 0000000..7db4175
--- /dev/null
+++ b/resources/project/iMwdHOXOBiBXhnA_li8gtEJVTjc/laEXQ8S8ZfculNP7NEgbVD64dicp.xml
@@ -0,0 +1,2 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<Info location="Startup.m" type="File"/>
\ No newline at end of file