Overview
The CrashCatch Analyze window is divided into three main areas: the toolbar at the top, the tab bar below it, and the content panel that fills the rest of the window. When no file is open, the content panel shows a drag-and-drop zone.
Toolbar
The toolbar provides quick access to common actions:
- Open .dmp open a Windows minidump file (
Ctrl+O) - Open UE Folder open an Unreal Engine crash folder (
Ctrl+Shift+O) - Re-analyze re-run analysis on the current file, useful after changing symbol paths
- Symbol Paths open the symbol path configuration dialog
- Export PDF export the current report as a PDF (
Ctrl+P) - Clear close the current file and return to the drop zone
If an update is available, an Update Available badge appears in the toolbar. Click it to install.
Tabs
Stack Trace
The default tab. Shows the symbolicated call stack of the crashing thread, with one row per frame. Each row includes the frame index, function name, source file, and line number (when PDB symbols are available). Frames from system DLLs can be dimmed via Preferences to help focus on your own code.
Threads
Lists every thread that was running at the time of the crash, including the thread ID and suspend count. The crashing thread is highlighted. Select a thread to view its stack trace in the panel below.
Modules
Lists every DLL and EXE loaded into the process at crash time base address, size, version, and the path to the associated PDB file if one was found. Unreal Engine modules are flagged with their module type (Engine, Game, Plugin).
Exception
Shows the decoded exception record:
- Exception code the raw NTSTATUS code (e.g.
0xC0000005) and its human-readable name (e.g.ACCESS_VIOLATION) - Fault address the instruction address where the exception occurred
- Access type for access violations, whether the fault was a read or write
- Target address for access violations, the memory address that was accessed (a null target address strongly suggests a null pointer dereference)
Registers
Displays the full x64 register state of the crashing thread at the moment of the crash: RAX, RBX, RCX, RDX, RSI, RDI, RBP, RSP, R8–R15, RIP, and EFLAGS. All values are shown in hexadecimal.
System
Shows the system information captured in the minidump: OS version and build number, processor architecture, and logical processor count.
Intel
The CrashCatch Intel Engine runs a heuristic analysis pass over the crash data and produces a structured finding. This does not require an internet connection or API key.
- Classification the likely crash category: null pointer dereference, stack corruption, heap misuse, race condition, etc.
- Confidence how strongly the evidence supports the classification, expressed as a percentage
- Summary a concise description of what the analysis found
- Indicators the specific pieces of evidence that led to the classification
- Secondary findings additional patterns that may be relevant
For Unreal Engine crashes, Intel also includes UE-specific hints based on engine module patterns and UE exception codes.
Explain Mode
Uses the Claude AI to produce a plain-English explanation of the crash. Requires an Anthropic API key and an internet connection. See the Explain Mode guide for setup instructions.
The output includes:
- Root cause a one-sentence summary of what caused the crash
- Evidence the specific signals from the dump that support the conclusion
- Suggested fix concrete steps to investigate and resolve the issue
Raw JSON
The complete parsed crash report as a JSON object. Useful if you want to process crash data programmatically, pipe it into another tool, or just inspect the raw output. The full schema is documented on the API Reference page.
Preferences
Open via Tools > Preferences. Available settings:
- Auto-explain on open automatically run Explain Mode whenever a file is loaded (requires API key)
- Show system frames include Windows system DLL frames in the stack trace
- Dim engine frames visually de-emphasize engine and runtime frames so your code stands out
Recent files
The last several files you opened are listed under File > Open Recent for quick access.