diff --git a/G-Earth/src/main/java/gearth/ui/extensions/executer/ExecutionInfo.java b/G-Earth/src/main/java/gearth/ui/extensions/executer/ExecutionInfo.java
index 43db6b1..428a82a 100644
--- a/G-Earth/src/main/java/gearth/ui/extensions/executer/ExecutionInfo.java
+++ b/G-Earth/src/main/java/gearth/ui/extensions/executer/ExecutionInfo.java
@@ -16,16 +16,16 @@ public class ExecutionInfo {
 
     static {
         extensionTypeToExecutionCommand = new HashMap<>();
-        extensionTypeToExecutionCommand.put("*.jar","java -jar {path}");
-        extensionTypeToExecutionCommand.put("*.py","python {path}");
-        extensionTypeToExecutionCommand.put("*.py3","python3 {path}");
-        extensionTypeToExecutionCommand.put("*.sh","{path}");
-        extensionTypeToExecutionCommand.put("*.exe","{path}");
+        extensionTypeToExecutionCommand.put("*.jar","java -jar \"{path}\"");
+        extensionTypeToExecutionCommand.put("*.py","python \"{path}\"");
+        extensionTypeToExecutionCommand.put("*.py3","python3 \"{path}\"");
+        extensionTypeToExecutionCommand.put("*.sh","\"{path}\"");
+        extensionTypeToExecutionCommand.put("*.exe","\"{path}\"");
 
         for(String type : extensionTypeToExecutionCommand.keySet()) {
             extensionTypeToExecutionCommand.put(
                     type,
-                    extensionTypeToExecutionCommand.get(type) + " -p {port} -f {filename} -c {cookie}"
+                    extensionTypeToExecutionCommand.get(type) + " -p {port} -f \"{filename}\" -c {cookie}"
                     );
         }
 
diff --git a/G-Earth/src/main/java/gearth/ui/extensions/executer/NormalExtensionRunner.java b/G-Earth/src/main/java/gearth/ui/extensions/executer/NormalExtensionRunner.java
index 918991f..a1a49b1 100644
--- a/G-Earth/src/main/java/gearth/ui/extensions/executer/NormalExtensionRunner.java
+++ b/G-Earth/src/main/java/gearth/ui/extensions/executer/NormalExtensionRunner.java
@@ -5,6 +5,7 @@ import gearth.ui.extensions.authentication.Authenticator;
 
 import java.io.File;
 import java.io.IOException;
+import java.net.URISyntaxException;
 import java.nio.file.*;
 import java.util.Arrays;
 import java.util.Random;
@@ -14,7 +15,18 @@ import java.util.Random;
  */
 public class NormalExtensionRunner implements ExtensionRunner {
 
-    public static final String JARPATH = new File(Main.class.getProtectionDomain().getCodeSource().getLocation().getPath()).getParent();
+    public static final String JARPATH;
+
+    static {
+        String value;
+        try {
+            value = new File(Main.class.getProtectionDomain().getCodeSource().getLocation().toURI().getPath()).getParent();
+        } catch (URISyntaxException e) {
+            value = new File(Main.class.getProtectionDomain().getCodeSource().getLocation().getPath()).getParent();
+            e.printStackTrace();
+        }
+        JARPATH = value;
+    }
 
     @Override
     public void runAllExtensions(int port) {
@@ -45,7 +57,6 @@ public class NormalExtensionRunner implements ExtensionRunner {
         String realname = String.join(".",Arrays.copyOf(split, split.length-1));
         String newname = realname + "-" + getRandomString() + ext.substring(1);
 
-
         Path originalPath = Paths.get(path);
         Path newPath = Paths.get(
                 JARPATH,
@@ -72,13 +83,12 @@ public class NormalExtensionRunner implements ExtensionRunner {
     public void tryRunExtension(String path, int port) {
         try {
             String filename = Paths.get(path).getFileName().toString();
-            Runtime.getRuntime().exec(
-                    ExecutionInfo.getExecutionCommand(getFileExtension(path))
+            String execCommand = ExecutionInfo.getExecutionCommand(getFileExtension(path))
                     .replace("{path}", path)
                     .replace("{port}", port+"")
                     .replace("{filename}", filename)
-                    .replace("{cookie}", Authenticator.generateCookieForExtension(filename))
-            );
+                    .replace("{cookie}", Authenticator.generateCookieForExtension(filename));
+            Runtime.getRuntime().exec(execCommand);
         } catch (IOException e) {
             e.printStackTrace();
         }