> For the complete documentation index, see [llms.txt](https://docs.lightact.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lightact.com/release-changelogs/lightact-4.16/lightact-4.16.1.md).

# LightAct 4.16.1

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This changelog was created on **21 August 2026**. It includes **0 Epics** and **4 upgrades**.

## Other Upgrades

There are 4 new upgrades in this epic.

#### LA4-7263: Crash On Reopen Project (asset Versioning)

Fixed a crash when a corrupted project file containing invalid asset version information.

**Status:** *Done* | **Requesters:** *MPR*

#### LA4-7247: Trigger Volume Node

<div align="left"><figure><img src="https://lightact.com/uploads/releases/LightAct4/changelogs/4.16.1/LA4-7247.png" alt=""><figcaption></figcaption></figure></div>

Introduced a Trigger Volume node for spatial queries.- Inputs: Positions (vec3 array) and a Primitive (Box or Sphere). Selecting an incompatible object shows a warning.- Outputs: On Inside (fires continuously when at least one point is inside), On Enter (fires once when a new point enters), On Exit (fires once when the point count decreases), and Objects Inside (int count).- Behavior: Evaluates whether any provided positions are within the selected primitive, fully respecting the primitive’s position, rotation, and scale.

**Status:** *Done*

#### LA4-7229: Jumping To Previous Landmark/cues If Playmode == Playing

<div align="left"><figure><img src="https://lightact.com/uploads/releases/LightAct4/changelogs/4.16.1/LA4-7229.png" alt=""><figcaption></figcaption></figure></div>

Fixed an issue where in Play mode, the previous-cue buttons only returned to the start of the current section and never to the actual previous cue, even with rapid presses. Restored the intended logic: if playback is within n seconds after a cue, jump two cues back; otherwise, jump to the nearest cue before the current time.

**Status:** *Done*

#### LA4-7228: Crossfade If One Of The Layers Exists Across Both Sections

<div align="left"><figure><img src="https://lightact.com/uploads/releases/LightAct4/changelogs/4.16.1/LA4-7228.png" alt=""><figcaption></figcaption></figure></div>

Fixed an issue where, during crossfades (Dip/Hold) between sections, the exception layer rendered on top, leaving Color Grid above until Gradient/Checkerboard appeared abruptly. Crossfades now preserve background continuity: non-exception layers transition normally, while the exception layer is rendered to a texture on the source side and reused at the correct moment on the destination. Included in 4.16.1.

**Status:** *Done* | **Requesters:** *MPR*