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Check Engine

Your modpack's check engine light. Crash, missing mod, broken recipe or "Invalid player data" kick? It tells you what broke and how to fix it, in plain English. Undo bad updates, find the faulty mod, back up and rescue your worlds. Never touches gameplay.
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Check Engine 0.19.0 (Forge 1.20.1)

File namecheckengine-forge-1.20.1-0.19.0.jar
Uploader
UanmeUanme
Uploaded
Oct 26, 2026
Downloads
48
Size
811.0 KB
Mod Loaders
Forge
File ID
9333958
Type
R
Release
Supported game versions
  • 1.20.1

Curse Maven Snippet

Forge

implementation fg.deobf("curse.maven:check-engine-1730396:9333958")

Learn more about Curse Maven

What's new

0.19.0 - Crash Doctor got a glow-up

Crashed? The next launch now walks you through it with tabs on the left: Fix, Crash lines, Changed and Get help. No more digging through a wall of buttons.

- If Check Engine knows what broke, it tells you how to fix it. If it doesn't, it says so instead of guessing.
- See the actual lines from the crash report, with the mod that did it marked in orange.
- Need help? "Copy for help" grabs everything a helper needs, ready to paste in your pack's Discord. Your name and IP are hidden, and nothing gets uploaded.
- "Game log" opens the log from the game that crashed (not the fresh one).
- Think Check Engine got it wrong? Hit "Report it" and tell us on GitHub.

Already crashed before you had Check Engine? Just drop it in and launch again. It picks up crashes from the last 24 hours.

Got Crash Assistant? They get along now. Check Engine skips what Crash Assistant already shows you and just brings the fix buttons.

Fixes

- Check Pack.bat's crash check got the same fixes.
- Running RivaTuner or the Discord overlay made Check Engine blame them for every crash. Sorry about that! Fixed.
- F3+C test crashes now just say "test crash, nothing to fix".
- Machine names in crash messages are readable now.

This mod has no additional files