How do I install the Ue Log Analyzer skill?

Run npx skillmds add modbender/ue-log-analyzer in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Ue Log Analyzer safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: docs only. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Ue Log Analyzer?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Ue Log Analyzer free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Ue Log Analyzer?

modbender (@modbender) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Ue Log Analyzer by modbender — Agent Skill

Name: Ue Log Analyzer
Rating: 4.5 (4 reviews)
Author: modbender

Ue Log Analyzer

Analyze Unreal Engine log files for errors, warnings, crashes, and performance issues. Use when: (1) User provides UE log file, (2) Analyzing crash dumps, (3) Debugging startup issues, (4) Finding performance bottlenecks in UE projects, (5) Checking pak mounting errors, (6) Lua errors in UnLua

modbender 526bf3d 2.5 KB Updated Sep 9, 2026 12 repo stars

File contents

UE Log Analyzer

Quick Start

Use the nodes tool to read log files from the paired computer, or use read for local files.

Common Error Patterns

Critical Errors (Fatal)

LogInit: Session CrashGUID
Fatal error:
Assertion failed:
Ensure condition failed:

Rendering Issues

LogD3D12RHI: Error:
LogVulkanRHI: Error:
LogRendererCore: Warning:

Lua/UnLua Errors

LogUnLua: Error:
LogUnLua: Warning:
attempt to index a nil value

Pak/Loading Errors

LogPakFile: Error:
LogStreaming: Error:
LogAssetRegistry: Error:

Network Issues

LogNet: Warning:
LogOnline: Error:

Analysis Workflow

Find errors: Search for Error:|FATAL|CRASH|Assert
Find warnings: Search for Warning:
Check crash: Look for Session CrashGUID
Lua errors: Search LogUnLua:
Timing: Check timestamps for hang points

Project-Specific Patterns

For SilverPalace project:

HeSDK errors: HeSDKLogError:
Module loading: MainModule_, SubModule_
VersionUpdate: MainModule_VersionUpdate
BigWorld: MainModule_BigWorld

Common Issues & Solutions

1. UMG_GeneralTransitions Missing

LogStreaming: Error: Couldn't find file for package /Game/UI/VX/VX_Common/UMG/UMG_GeneralTransitions
LogUnLua: Error: LoadedAsset is nil

Fix: Check pak packaging includes this UI asset

2. SysStartUpDev nil

Error: c_UMG_Login_Announcement.lua:26: attempt to index a nil value (field 'SysStartUpDev')

Fix: Check Lua config table for SysStartUpDev entry

3. Scalability ini error

Ensure condition failed: false
Scalability.ini can only set ECVF_Scalability console variables
('r.Mobile.AntiAliasing'='2' is ignored)

Fix: Fix Scalability.ini r.Mobile.AntiAliasing value (0 or 1)

4. Shader/PSO errors

LogD3D12RHI: Error: Failed to create pipeline state

Fix: Rebuild shaders or clear shader cache

Output Format

Provide findings in:

Error count by severity (Fatal/Error/Warning)
Timeline of events
Likely root cause
Suggested fixes (优先级排序)

---name: ue-log-analyzerdescription: Analyze Unreal Engine log files for errors, warnings, crashes, and performance issues. Use when: (1) User provides UE log file, (2) Analyzing crash dumps, (3) Debugging startup issues, (4) Finding performance bottlenecks in UE projects, (5) Checking pak mounting errors, (6) Lua errors in UnLua--- # UE Log Analyzer ## Quick Start Use the `nodes` tool to read log files from the paired computer, or use `read` for local files. ## Common Error Patterns ### Critical Errors (Fatal) ``` LogInit: Session CrashGUID Fatal error: Assertion failed: Ensure condition failed: ``` ### Rendering Issues ``` LogD3D12RHI: Error: LogVulkanRHI: Error: LogRendererCore: Warning: ``` ### Lua/UnLua Errors ``` LogUnLua: Error: LogUnLua: Warning: attempt to index a nil value ``` ### Pak/Loading Errors ``` LogPakFile: Error: LogStreaming: Error: LogAssetRegistry: Error: ``` ### Network Issues ``` LogNet: Warning: LogOnline: Error: ``` ## Analysis Workflow 1. **Find errors**: Search for `Error:|FATAL|CRASH|Assert` 2. **Find warnings**: Search for `Warning:` 3. **Check crash**: Look for `Session CrashGUID` 4. **Lua errors**: Search `LogUnLua:` 5. **Timing**: Check timestamps for hang points ## Project-Specific Patterns For SilverPalace project: - HeSDK errors: `HeSDKLogError:` - Module loading: `MainModule_`, `SubModule_` - VersionUpdate: `MainModule_VersionUpdate` - BigWorld: `MainModule_BigWorld` ## Common Issues & Solutions ### 1. UMG_GeneralTransitions Missing ``` LogStreaming: Error: Couldn't find file for package /Game/UI/VX/VX_Common/UMG/UMG_GeneralTransitions LogUnLua: Error: LoadedAsset is nil ``` **Fix**: Check pak packaging includes this UI asset ### 2. SysStartUpDev nil ``` Error: c_UMG_Login_Announcement.lua:26: attempt to index a nil value (field 'SysStartUpDev') ``` **Fix**: Check Lua config table for SysStartUpDev entry ### 3. Scalability ini error ``` Ensure condition failed: false Scalability.ini can only set ECVF_Scalability console variables ('r.Mobile.AntiAliasing'='2' is ignored) ``` **Fix**: Fix Scalability.ini r.Mobile.AntiAliasing value (0 or 1) ### 4. Shader/PSO errors ``` LogD3D12RHI: Error: Failed to create pipeline state ``` **Fix**: Rebuild shaders or clear shader cache ## Output Format Provide findings in: - Error count by severity (Fatal/Error/Warning) - Timeline of events - Likely root cause - Suggested fixes (优先级排序)

Frequently asked questions