Compatibility

Diagnose Everest, platform, map, and external-tool compatibility issues.

Akron runs inside Everest. Compatibility issues usually come from the active installation path, map-specific behavior, missing external tools, or platform-specific file locations.

Installation and prefix issues

If files are in the correct locations but Akron fails to load, verify the active runtime:

• Steam and Steam Flatpak may use different filesystem roots.
• Wine or Proton prefixes may isolate Celeste data.
• Portable installations may use their own Mods and Saves directories.
• Copied mod archives may reside in an installation folder other than the one currently being launched.

Persistent StartPos compatibility

The StartPos tab’s persistent Set and Load actions use Akron’s native runtime snapshot path. Current-map broker and unsafe-native overrides do not control this path.

If persistent StartPos Load fails:

1. Confirm that the saved StartPos belongs to the current map and save-file slot. Its saved room can differ from the room you load from.
2. Resume Celeste and finish any room transition or cutscene.
3. Check whether the snapshot is missing, damaged, or from a different runtime or mod set.
4. See StartPos recovery for the complete persistent-snapshot checks.

Savestate map compatibility

The separate Capture StartPos State and Restore StartPos State bindings use the active 1-9 savestate slot. Per-map overrides apply to this savestate path.

Find Always Use Broker and Allow Unsafe StartPos Restore under Current Map Compatibility in Everest’s Akron options. Use the unsafe restore option only for controlled testing in a non-submission setup.

External tool compatibility

Tool	Compatibility note
Motion Smoothing	FPS and TPS bypass rows appear when the mod is loaded at runtime. Akron does not declare Motion Smoothing as a formal Everest dependency. Motion Smoothing’s higher-FPS path keeps simulation at 60 TPS when TPS Bypass is off, so Akron marks FPS Bypass and the physics-neutral smoothing options as Normal clear.
Speedrun Tool	Akron can display Speedrun Tool’s room time, run its room-time export command, and use its broker for the separate active savestate slots.
CelesteTAS	TAS handoff delegates active control and is marked as Cheat.
Extended Variant Mode	Variant controls appear when the mod is loaded at runtime. Dynamic rows depend on the installed Extended Variant Mode option list.
Extended Camera Dynamics	Camera status and ECD Zoom Out rows appear when the mod is loaded at runtime. Akron Cursor Zoom uses ECD camera focus only for below-100% player-centered zoom while ECD hooks are active; native Akron cursor-focused zoom-in remains unchanged.
Discord Deafen	Auto Deafen simulates the configured hotkey; it does not directly manage Discord’s internal state. Hotkey injection is implemented only on Windows and Linux. Linux requires an accessible X11 or XWayland display and uses XTest when available, with xdotool or flatpak-spawn fallbacks. Native Wayland injection is not supported.

Motion Smoothing’s current compatibility notes call out two cases that matter in Akron:

• Fancy camera smoothing changes Celeste’s rendering pipeline and is currently documented as incompatible with auspicioushelper.
• Dynamic framerate mode allows arbitrary FPS, but can conflict with mods that hook the main XNA tick path.
• Interpolate object smoothing can add 1-2 frames of input delay, so Akron treats that selected value as Cheat even though the Extrapolate object-smoothing value is Normal clear.

Rendering and capture

Visual verification is necessary for rendering-sensitive features, including overlays, hitboxes, camera, zoom, death transitions, room captures, map captures, and screenshots.

When rendering differs across hosts, include the host, platform, map SID, visible policy/status state, Akron setup, and screenshot evidence in the issue.