FO4 Crash Log Auto Scanner And Setup Integrity Checker (CLASSIC)
🟡 Updated this year⚠️ Install Order · 3 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
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🔍 Analysis
- 👍 1.9% endorsement rate — high engagement, a strong quality signal
- 🏆 #31 of 49 Utilities mods in this game by downloads
📋 About This Mod
DISCLAIMER: I am not associated with the Buffout 4 author/dev Fudgyduff in any way.
This tool is my own separate project and solely my responsibility.
Don't bother the Buffout dev about it if you don't have to.
This tool is based on How To Install Buffout 4 And Resolve Crash Logs article.
It automatically scans Buffout 4 crash logs and gives you detailed information on detected settings and mods that might be causing the crash, along with additional steps to take depending on what it finds. Currently implemented logic checks for ~250 different things.
CLASSIC can now also extensively scan game and mod files for additional problems.
REQUIREMENTS
- Buffout 4 OR Buffout 4 NG
- Fallout 4 Script Extender
- Address Library For F4SE Plugins
- OR Address Library For F4SEVR Plugins
- BSArch (For Scanning Mod Files)
ADDITIONAL FEATURES
CLAS has evolved into: Crash Log Auto Scanner & Setup Integrity Checker
Here are most of its main features (and there's plenty more):
- Automatically checks for its own updates every 7 days.
- Automatically grabs all crash log files from the Script Extender folder.
- Plays a notification sound once crash logs and game file scans are done.
- Checks if the game is installed outside of Program Files folder.
- Checks if Buffout 4 and its requirements are correctly installed.
- Warns you if MS OneDrive is overriding your Documents folder location.
- Checks if you have the latest version of Fallout 4 Script Extender (F4SE).
- Checks if any F4SE files are corrupted or overwritten by other mods.
- Checks if F4SE files and scripts are correctly installed.
- Automatically enables Archive Invalidation / Loose Files setting if necessary.
FO4 Crash Log Auto Scanner And Setup Integrity Checker (CLASSIC) is a utility that scans Buffout 4 crash logs, game files, and mod files to automatically detect problems in around 250 different cases. It includes a GUI and is a rebranded version of the original Crash Log Auto Scanner (CLAS). With over 6,000 endorsements and 322,000 downloads, it's a popular tool for Fallout 4 modders troubleshooting crashes.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Huge community trust with 6,255 endorsements and 322k downloads.
- One-click scanning saves hours of manual crash log reading.
- Covers a wide range of issues (250 cases) so you catch problems you'd miss.
⚠️ Cons
- Requires Buffout 4 to be installed for crash logs to be generated.
- GUI might be overwhelming for first-time users with no tutorial.
- Last updated July 2026 – future game updates could break compatibility.
For Fallout 4 modders who are tired of CTDs and want a quick way to diagnose crash logs. Perfect for players who use Buffout 4 and need to pinpoint mod conflicts or missing patches. Skip if you rarely mod or don't experience crashes.
💡 Beginner Tips
- Make sure Buffout 4 is installed and configured to generate crash logs, otherwise the scanner has nothing to read.
- Run the scanner after a crash and check the 'detected problems' section for specific mod names or missing patches.
- If you use a mod manager, let it handle the installation to avoid file placement issues.
📊 Mod Details
- Game
- Fallout 4 Mods
- Author
- Poet
- Version
- 9.0.0
- Downloads
- 322,372
- Endorsements
- 6,255
- Category
- Utilities
- Created
- 12/4/2021
- Updated
- 7/30/2026
🔧 How to Install Fallout 4 Mods
Download from Nexus.
📖 Full step-by-step install guide for Fallout 4 →
Visit the official mod page for specific installation instructions for this mod.
🎮 Need cheat codes or console commands? Check ur gaming wiki for Fallout 4 commands, item IDs, and more.
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