diff --git a/packages/safe-chain/src/shell-integration/helpers.js b/packages/safe-chain/src/shell-integration/helpers.js
index d6c19d7..aac54d6 100644
--- a/packages/safe-chain/src/shell-integration/helpers.js
+++ b/packages/safe-chain/src/shell-integration/helpers.js
@@ -1,6 +1,7 @@
 import { spawnSync } from "child_process";
 import * as os from "os";
 import fs from "fs";
+import path from "path";
 
 export const knownAikidoTools = [
   { tool: "npm", aikidoCommand: "aikido-npm" },
@@ -65,13 +66,24 @@ function shouldRemoveLine(line, pattern) {
 }
 
 export function addLineToFile(filePath, line, eol) {
-  if (!fs.existsSync(filePath)) {
-    fs.writeFileSync(filePath, "", "utf-8");
-  }
+  createFileIfNotExists(filePath);
 
   eol = eol || os.EOL;
 
   const fileContent = fs.readFileSync(filePath, "utf-8");
-  const updatedContent = fileContent + eol + line;
+  const updatedContent = fileContent + eol + line + eol;
   fs.writeFileSync(filePath, updatedContent, "utf-8");
 }
+
+function createFileIfNotExists(filePath) {
+  if (fs.existsSync(filePath)) {
+    return;
+  }
+
+  const dir = path.dirname(filePath);
+  if (!fs.existsSync(dir)) {
+    fs.mkdirSync(dir, { recursive: true });
+  }
+
+  fs.writeFileSync(filePath, "", "utf-8");
+}
diff --git a/packages/safe-chain/src/shell-integration/setup.js b/packages/safe-chain/src/shell-integration/setup.js
index 792aa3c..b58eb51 100644
--- a/packages/safe-chain/src/shell-integration/setup.js
+++ b/packages/safe-chain/src/shell-integration/setup.js
@@ -56,11 +56,13 @@ export async function setup() {
  */
 function setupShell(shell) {
   let success = false;
+  let error;
   try {
     shell.teardown(knownAikidoTools); // First, tear down to prevent duplicate aliases
     success = shell.setup(knownAikidoTools);
-  } catch {
+  } catch (err) {
     success = false;
+    error = err;
   }
 
   if (success) {
@@ -75,6 +77,13 @@ function setupShell(shell) {
         "Setup failed"
       )}. Please check your ${shell.name} configuration.`
     );
+    if (error) {
+      let message = `  Error: ${error.message}`;
+      if (error.code) {
+        message += ` (code: ${error.code})`;
+      }
+      ui.writeError(message);
+    }
   }
 
   return success;