diff --git a/CHANGELOG.md b/CHANGELOG.md
index c1bc367..a2a3715 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,5 @@
 # Changelog
 
-- fix: [#3] "No data available for steady state settings"
-  - depending on x-axis selection the measurements are prefiltered to avoid
-    the annoying error message in common use cases
-- new: improved data import workflow
-  - import can now do multiple files at a time
-  - the whole process is within same uifigure
-  - button that opens the selected parser for editing
-    (in case something has to be changed)
\ No newline at end of file
+- fix: [#4] Downsampling Error for Magic Formula Tyre Tool V1.4 "Expected X to be nonempty"
+  - prominently occured with Round 9 data
+  - fixed by updating parser in submodule
\ No newline at end of file
diff --git a/MagicFormulaTyreTool.prj b/MagicFormulaTyreTool.prj
index e24d4eb..89cb499 100644
--- a/MagicFormulaTyreTool.prj
+++ b/MagicFormulaTyreTool.prj
@@ -1,8 +1,8 @@
 <deployment-project plugin="plugin.apptool" plugin-version="1.0">
-  <configuration build-checksum="782106963" file="C:\Users\Tom\Documents\magic-formula-tyre-tool\MagicFormulaTyreTool.prj" location="C:\Users\Tom\Documents\magic-formula-tyre-tool" name="MagicFormulaTyreTool" target="target.mlapps" target-name="Package App">
+  <configuration build-checksum="1949022145" file="C:\workspace\magic-formula-tyre-tool\MagicFormulaTyreTool.prj" location="C:\workspace\magic-formula-tyre-tool" name="MagicFormulaTyreTool" target="target.mlapps" target-name="Package App">
     <param.appname>MagicFormulaTyreTool</param.appname>
-    <param.authnamewatermark>Tom Teasdale</param.authnamewatermark>
-    <param.email>teasdale@lightsaber.red</param.email>
+    <param.authnamewatermark />
+    <param.email />
     <param.company />
     <param.icon>${PROJECT_ROOT}\MagicFormulaTyreTool_resources\icon_24.png</param.icon>
     <param.icons>
@@ -13,7 +13,7 @@
     <param.summary>MATLAB GUI for Magic Formula Tyre Modeling</param.summary>
     <param.description>https://github.com/teasit/magic-formula-tyre-tool</param.description>
     <param.screenshot>${PROJECT_ROOT}\assets\img\App_Screenshot_Main.jpg</param.screenshot>
-    <param.version>1.5.0</param.version>
+    <param.version>1.5.1</param.version>
     <param.products.name>
       <item>MATLAB</item>
       <item>Optimization Toolbox</item>
@@ -143,7 +143,7 @@
     </fileset.resources>
     <fileset.package />
     <build-deliverables>
-      <file location="C:\Users\Tom\Documents" name="magic-formula-tyre-tool" optional="false">C:\Users\Tom\Documents\magic-formula-tyre-tool</file>
+      <file location="C:\workspace" name="magic-formula-tyre-tool" optional="false">C:\workspace\magic-formula-tyre-tool</file>
     </build-deliverables>
     <workflow />
     <matlab>
diff --git a/ToolboxPackager.prj b/ToolboxPackager.prj
index 5344b2e..5a49937 100644
--- a/ToolboxPackager.prj
+++ b/ToolboxPackager.prj
@@ -1,13 +1,13 @@
 <deployment-project plugin="plugin.toolbox" plugin-version="1.0">
-  <configuration build-checksum="4228771701" file="C:\Users\Tom\Documents\magic-formula-tyre-tool\ToolboxPackager.prj" location="C:\Users\Tom\Documents\magic-formula-tyre-tool" name="ToolboxPackager" target="target.toolbox" target-name="Package Toolbox">
+  <configuration build-checksum="4228771701" file="C:\workspace\magic-formula-tyre-tool\ToolboxPackager.prj" location="C:\workspace\magic-formula-tyre-tool" name="ToolboxPackager" target="target.toolbox" target-name="Package Toolbox">
     <param.appname>MagicFormulaTyreTool</param.appname>
-    <param.authnamewatermark>Tom Teasdale</param.authnamewatermark>
-    <param.email>teasdale@lightsaber.red</param.email>
+    <param.authnamewatermark />
+    <param.email />
     <param.company />
     <param.summary>MATLAB GUI for Magic Formula Tyre Modeling</param.summary>
     <param.description>https://github.com/teasit/magic-formula-tyre-tool</param.description>
     <param.screenshot>${PROJECT_ROOT}\assets\img\App_Screenshot_Main.jpg</param.screenshot>
-    <param.version>1.5.0</param.version>
+    <param.version>1.5.1</param.version>
     <param.output>${PROJECT_ROOT}\MagicFormulaTyreTool.mltbx</param.output>
     <param.products.name />
     <param.products.id />
@@ -121,7 +121,7 @@ MagicFormulaTyreTool_resources</param.exclude.filters>
     <fileset.depfun.excluded />
     <fileset.package />
     <build-deliverables>
-      <file location="${PROJECT_ROOT}" name="MagicFormulaTyreTool.mltbx" optional="false">C:\Users\Tom\Documents\magic-formula-tyre-tool\MagicFormulaTyreTool.mltbx</file>
+      <file location="${PROJECT_ROOT}" name="MagicFormulaTyreTool.mltbx" optional="false">C:\workspace\magic-formula-tyre-tool\MagicFormulaTyreTool.mltbx</file>
     </build-deliverables>
     <workflow />
     <matlab>
diff --git a/src/about.json b/src/about.json
index a7ddc11..e3e4228 100644
--- a/src/about.json
+++ b/src/about.json
@@ -1,6 +1,6 @@
 {
     "Name": "MagicFormulaTyreTool",
-    "Version": "1.5.0",
+    "Version": "1.5.1",
     "Authors": [
         "Tom Teasdale"
     ],
diff --git a/src/magic-formula-tyre-library b/src/magic-formula-tyre-library
index c9b4438..aeae697 160000
--- a/src/magic-formula-tyre-library
+++ b/src/magic-formula-tyre-library
@@ -1 +1 @@
-Subproject commit c9b443824edfea292f9411f88f9707b00fe5ae63
+Subproject commit aeae697c414c367c9681ef7ce15184221fd46ffb