Software⏱️ 2 min read📅 2026-06-03

How to Fix: Xcode 10.2 Update issue Build system error -1: Unable to load contents of file list: input/output xcfilelist

Xcode 10.2 update issue Build system error -1: Unable to load contents of file list

Quick Answer: Try resetting the Xcode build settings by deleting the DerivedData folder and restarting Xcode.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. ✅ Best Solutions to Fix It
  3. ✨ Wrapping Up

Xcode 10.2 Update issue Build system error -1: Unable to load contents of file list: input/output xcfilelist

🛑 Root Causes of the Error

  • Incorrectly configured build system or outdated pod files.

✅ Best Solutions to Fix It

Method 1: Resolving Build System Configuration

  1. Step 1: Open Xcode, go to Product > Scheme > Edit Scheme and select the 'Legacy Build System' under 'Build Settings'.

Method 2: Updating Pod Files and Cleaning Derived Data

  1. Step 1: Run the command `pod install` in your terminal to update pod files.

✨ Wrapping Up

To resolve this issue, ensure that the build system is correctly configured and that pod files are up-to-date. By following these steps, you should be able to fix the build error and successfully compile your project.

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