Crash Assistant guide for All the Mods 10: To the Sky 1.0 to 1.0.2

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What is Crash Assistant?

3 parts

Same as in the All the Mods 10 8.1 guide

Crash Assistant is a crash-helper mod. When Minecraft crashes, it pops up a window that immediately shows the affected game and launcher logs, crash reports and hs_err files. From there you can upload everything with one click and copy a link to paste into Discord or GitHub. The pack ships version 1.11.12.[1][2]

It is client-only, so on a server it does nothing.[1]

Who it is for

It is for anyone who crashes and wants to know why, and for people who help with support. You get a formatted, ready-to-paste report, and anyone helping you gets current logs without having to ask for more files. The mod's author says more than 75% of issues are common and easily solvable, and the analysis aims to cut that support load.[1]

What it does for you

  • Analyzes logs for many known crash causes. When it finds one, it shows a dialog with a description and a detailed fix. Examples include out-of-memory errors, duplicated mods, Mixin conflicts, and GPU driver problems.[1]
  • Warns you if Minecraft is running on an integrated GPU when a dedicated one is available, and offers a one-click Auto-Fix button on Windows.[1]
  • Warns you if your CPU is one of the Intel 13th/14th generation models known to have a critical stability bug.[1]
  • Includes analysis tools in the GUI menu, such as a Package/Class Finder that shows which mod contains a given Java class or package.[1]
  • Saves the modlist, and for modpack players it lists the mods you added, removed or updated compared with the official list. You can also save it manually with the /crash_assistant modlist save command.[1]

It runs as a separate process that waits for the Minecraft JVM to stop. It also loads very early, so it can catch crashes during startup.[1]

Where it fits in the pack

Crash Assistant is a utility rather than a gameplay mod, so it adds no progression of its own. You don't need to unlock or craft anything. It is there when something goes wrong.[1]

Unverified The sources I was given show no quests or ATM Star path involvement for this mod, and no in-jar guidebook was found for it.

How do you get started with Crash Assistant?

2 parts

Same as in the All the Mods 10: To the Sky 2.0.4 guide

Crash Assistant is not something you craft or unlock. It sits in the background, and when Minecraft crashes it opens a window that shows the affected game and launcher logs, crash reports or hs_err files. From there you can upload them in one click and copy the link to share.[1]

It is client-only, so on a server it does nothing.[1]

Unverified The sources here show no quests and no recipes for this mod, so there is no first item to make and no quest chapter to follow. A list of the mods in the pack's modlist lives in config/crash_assistant/modlist.json, which the sources here do not show.

What to know before your first crash

The window analyzes logs for many known crash reasons. If it spots a known issue, it shows a dialog with a description of the problem and a solution. It can also warn you if Minecraft is running on an integrated GPU when a dedicated one is available. You can drag and drop log files straight out of the window, or drag every log at once by dragging the "Available log files:" label.[1]

In this pack, log analysis is switched on through analysis.enabled, and the analysis tools through analysis_tools.enabled. The first time a crash reason is shown, the OK button is delayed by the number of seconds in analysis.first_show_delay, which is 10 here, so you have time to read the recommendation.[3]

The window also appears if the game crashes while loading mods and the FML error screen is displayed, because general.show_on_fml_error_screen is on in this pack.[3]

Sharing your logs

Logs are always uploaded to mclo.gs. This pack sets general.wrap_link to kostromdan.dev, which means the link you copy afterwards is a short wrapped link rather than the original mclo.gs one. The help button opens whatever is set in general.help_link, and the window's wording follows general.formulation_type, which is DISCORD in this pack.[3]

Uploading also sends metadata about the uploaded logs (not their contents) to api.kostromdan.dev, since general.send_uploaded_logs_data_to_kostromdan_dev is true here. Turn it off in that config file if you would rather not.[3]

The mod also writes its own copy of the stderr stream to logs/stderr_stream.log, because general.generate_own_launcher_log is enabled. Many launchers do not save that stream, and it can help with debugging.[3]

Tip: The crash command is turned off in this pack: crash_command.enabled is false. If you enable it, you have to run the command again within the number of seconds in crash_command.seconds (10 here) to confirm you want to crash the game.[3]

How does Crash Assistant work?

5 parts

Crash Assistant is a crash-reporting helper, not a content mod, so there are no machines, multiblocks or power networks to learn. How it works is all about what happens after Minecraft crashes, and what this pack has set in its config.[1]

What happens when the game crashes

After a crash, the mod shows a GUI that immediately lists the affected game or launcher logs, crash reports and hs_err files. From there you can upload them in one click, copy the link and do other things that make reporting and troubleshooting easier. It also warns you if Minecraft is running on an integrated GPU when a dedicated one is available.[1]

The GUI supports drag and drop. You can drag a file out to wherever you want, or drag all the logs at once by grabbing the "Available log files:" label. The mod is client-only, so on a server it does nothing.[1]

Log analysis

The mod checks logs against many known crash reasons. When it finds one, it shows a dialog with a description of the problem and a detailed solution. Some issues also come with auto-fixes.[1]

  • JVM crashes (hs_err files): driver problems such as nvoglv64.dll or atio6axx.dll, InsufficientMemory, and JavaTooHigh.[1]
  • Logs and crash reports: OutOfMemoryError, DuplicatedMods, MixinApply, MissingUnsupportedDependencies, DiskSpaceEnded and UnsupportedClassVersion, among many others.[1]
  • Windows Event Log: WasClosedByWindows, for when the game froze and was terminated by the OS.[1]

After an upload, every supported log is also run through the Codex logs analyzer from mclo.gs. For cases where the Codex message can be unclear, the mod shows its own detailed how-to-fix message, for example for an erroring block or entity. The mod's page says more than 75% of issues are common and easily solvable problems, which is why this cuts down on support requests.[1]

The GUI menu also has analysis tools, including one that scans your mods for addons incompatible with your installed Create or Epic Fight version, and an MCreator mod detector that lists every mod made with MCreator.[1]

How the pack configures it

Everything below lives in config/crash_assistant/config.toml. Logs upload to mclo.gs through general.upload_to. The pack leaves general.show_on_fml_error_screen on, so the GUI also appears when the game crashes while loading mods and the FML error screen is shown. general.kill_old_app is on too, which closes a leftover window from an old crash when you start Minecraft again.[4]

The pack hides its own latest.log entry from the GUI's log list with general.blacklisted_logs. Its general.help_link points to a Discord invite, which opens in your browser when you press the request help button.[4]

Support text and the generated message

The pack sets text.modpack_name to the Better Compatibility Checker placeholders for the modpack name and version, so crash messages show the pack's name and version as BCC knows them. text.support_name and text.support_place name the pack's tech support channel in the GUI text.[4]

The "Upload all..." button builds a message you can post for help. In this pack it is written in English (generated_message.generated_msg_lang is en_us), and generated_message.h3_prefix is on, which adds a ### prefix before each filename so the links are not too small to hit on mobile. generated_message.text_under_crashed and generated_message.warning_after_upload_all_button_press are both empty here, so no extra form text or warning is added.[4]

Modlist and crash command

The modlist feature is enabled with modpack_modlist.enabled, and modpack_modlist.add_resourcepacks is on so resource packs are listed in modlist.json with a (resourcepack) suffix. modpack_modlist.auto_update is off in this pack, so modlist.json is not rewritten on every launch. The config says that if you want to save it manually, you use the /crash_assistant modlist save command. Only the players named in modpack_modlist.modpack_creators count as modpack creators and can overwrite the file.[4]

The pack also ships with the crash command turned off (crash_command.enabled is false). If a creator turns it on, the command has to be run a second time within crash_command.seconds seconds (10 in this pack) to confirm you really want to crash the game. Setting that value to 0 or less disables the confirmation.[4]

Tip: If a crash window shows up, don't send a screenshot of it to the pack's support. general.show_dont_send_screenshot_of_gui_notice is on, so the generated message carries a notice that a screenshot of the GUI tells the creators nothing. Use the upload button and share the link instead.[4]

Which Crash Assistant config options matter?

4 parts

Crash Assistant is a client-only mod, so it does nothing on a server. Everything below lives in general.help_link's file, config/crash_assistant/config.toml, and these are the values this pack ships with.[1][4]

The crash window

Support and branding

general.help_link is set to the pack's Discord invite, and that link opens in your browser when you press the request help button. text.support_name and text.support_place name the pack's tech support channel in the "Request help in..." text.[4]

text.modpack_name is "$BCC.modpackName$ - $BCC.modpackVersion$". That uses the Better Compatibility Checker integration, so the name and version in the crash text come from that mod's config.[4]

The "Upload all" message

Modlist and crash command

What changed in Crash Assistant between versions?

1 part

All the Mods 10: To the Sky 1.0.2 ships Crash Assistant 1.9.15, using the NeoForge jar built for 1.20.6 to 1.21.4. The mod was already in the pack in version 1.0 or earlier. Here are the notable changes from the mod's own changelog, newest first.[5]

Changes in the mod's own releases

  • 1.9.15 (the version in this pack): backported to many older Minecraft versions on Forge, Fabric and NeoForge. Crash Assistant is now available for all modloaders on every version from 1.16.5 to 1.21.8 without gaps, plus small fixes and improvements.[5][6]
  • 1.9.14: marked 1.21.8 as compatible. Most other fixes in this release target 1.7.10 and 1.12.2, such as client-only initialization and fixing the rare case of Crash Assistant starting twice.[6]
  • 1.9.13: initial release for 1.7.10, along with 1.12.2 fixes that removed most coremods in favour of Forge events to improve compatibility.[6]
  • 1.9.12: finally fixed the root cause of the gpu-detect-jni.dll issue, which could very rarely break the check for running on an integrated GPU.[6]
  • 1.9.11: fixed a rare issue where Crash Assistant did not start, caused by the switch to gpu-detect-jni.dll in 1.9.7. GPU detection now runs in a separate process from the Crash Assistant app, so a detection failure can't stop the app from starting. The ModuleFind log analysis text was also made clearer.[6]
  • 1.9.10: backport to 1.12.2, which was its initial release there, and a small fix in 1.16.5.[6]
  • 1.9.9: added the MissingIndium, ModuleFind and UnsupportedClassVersion crash analyses, improved the MixinApply and CreateDependencies analyses, and fixed Crash Assistant not starting in some rare cases because it thought the crash was a normal finish of Minecraft.[6]
  • 1.9.8: fixed the Create6Addons analysis, which had been partly broken by the 1.9.7 update and wasn't triggered in some cases.[6]

Sources

  1. Crash Assistant project page (modrinth) · official mod data
  2. All the Mods 10 8.1 mod list · pack file
  3. All the Mods 10: To the Sky 2.0.4 config: config/crash_assistant/config.toml · pack file
  4. All the Mods 10: To the Sky 1.0.2 config: config/crash_assistant/config.toml · pack file
  5. All the Mods 10: To the Sky 1.0.2 mod list · pack file
  6. Crash Assistant 1.9.15 changelog · changelog
Where this guide comes from

Written from what All the Mods 10: To the Sky itself ships: its files and recipes, the in-game guidebooks and the mods' own pages. Every statement links to the source it came from, and the numbers are checked against the pack before publishing.

Guide last verified Oct 17, 2026.

Guides for other versions: 2.0.3 to 2.1.0 · 2.0.1 to 2.0.2 · 1.6 to 2.0.0 · 1.1.1 to 1.2.1

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