diff --git a/pom.xml b/pom.xml
index e8224b8..9853b4f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
   <groupId>istlab.KisoJikkenNWP</groupId>
   <artifactId>KisoJikkenNWP</artifactId>
   <packaging>jar</packaging>
-  <version>0.74</version>
+  <version>0.75</version>
   <name>KisoJikkenNWP</name>
   <url>http://maven.apache.org</url>
 
diff --git a/src/main/java/istlab/KisoJikken/App.java b/src/main/java/istlab/KisoJikken/App.java
index 6c2f168..b8c0675 100644
--- a/src/main/java/istlab/KisoJikken/App.java
+++ b/src/main/java/istlab/KisoJikken/App.java
@@ -28,6 +28,7 @@
  */
 public class App {
     public static String userhome;
+    public static String userhome_escaped;
     public static String nwpsrc = File.separator + "NWP" + File.separator + "src";
     public static String gitrepos = "https://git.istlab.info/git/miura250/NWP.git";
     public static String latestVersion;
@@ -59,6 +60,8 @@
 
         // ファイルがあるかチェック
         userhome = System.getProperty("user.home");
+        userhome_escaped = App.userhome.replaceAll("\\\\","\\\\\\\\"); //なんじゃこの意味不明なエスケープは https://stackoverflow.com/questions/1701839/string-replaceall-single-backslashes-with-double-backslashes
+
         getNWPifnotexist(false);
 
         SwingUtilities.invokeLater(() -> {
diff --git a/src/main/java/istlab/KisoJikken/Editor.java b/src/main/java/istlab/KisoJikken/Editor.java
index 1860dd5..622a749 100644
--- a/src/main/java/istlab/KisoJikken/Editor.java
+++ b/src/main/java/istlab/KisoJikken/Editor.java
@@ -59,7 +59,7 @@
         textArea.addKeyListener(this);
 
         try {
-            setTitle(file.getCanonicalPath().replaceAll(App.userhome, "~"));
+            setTitle(file.getCanonicalPath().replaceAll(App.userhome_escaped, "~"));
         } catch (IOException e) {
             e.printStackTrace();
         }
diff --git a/src/main/java/istlab/KisoJikken/FileTreeModel.java b/src/main/java/istlab/KisoJikken/FileTreeModel.java
index 790d4d4..65c3e7b 100644
--- a/src/main/java/istlab/KisoJikken/FileTreeModel.java
+++ b/src/main/java/istlab/KisoJikken/FileTreeModel.java
@@ -8,16 +8,12 @@
 import javax.swing.tree.TreePath;
 
 class MyFile extends File {
-    static String userhome_escaped; 
     public MyFile(String pathname) {
         super(pathname);
     }
 
     public String toString() {
-        if (userhome_escaped == null){
-            userhome_escaped = App.userhome.replaceAll("\\\\","\\\\\\\\");
-        }
-        return super.toString().replaceAll(userhome_escaped, "~");
+        return super.toString().replaceAll(App.userhome_escaped, "~");
     }
 }
 
diff --git a/src/main/java/istlab/KisoJikken/Launcher.java b/src/main/java/istlab/KisoJikken/Launcher.java
index 26b9d1a..1c402d3 100644
--- a/src/main/java/istlab/KisoJikken/Launcher.java
+++ b/src/main/java/istlab/KisoJikken/Launcher.java
@@ -29,7 +29,7 @@
 public class Launcher extends JFrame implements MouseInputListener, KeyListener {
 
     public static Launcher theapp;
-    public static String version = "0.74";
+    public static String version = "0.75";
     // JPanel mainP;
     File root;
     JTree tree;