The Radio Waves effect should no longer produce an uninitialized memory read error.

Preview frame rate no longer slows down when you move the pointer over a previewing Composition, Layer, or Footage panel.

Stopping the render queue with a render item that was previously in WILL_CONTINUE status no longer causes that item to change to an incorrect status.

Animation presets that contain only an expression no longer cause an error message or sometimes create erroneous keyframes.

Rendering to an image sequence no longer fails if the destination folder contains an image sequence that is in use by the project.

Clone Stamp strokes no longer fail to render if the source layer is of different dimensions than the target layer.

Effects with a layer parameter referring to the effect’s host layer now work as expected when that layer is copied and pasted.

Copying a Layer Control expression control effect from one layer to another no longer causes After Effects to crash.

In addition to the above, several other bugs have been fixed:

Multiple copies of certain effects, like the effects from RE:Vision Effects, no longer produce errors about I_MIX_GUID_DEPENDENCIES.

Audio plug-ins like Trapcode Sound Keys and BorisFX Beat Reactor now function correctly.

MXF files from Sony cameras again import as expected.

Changes to Camera Raw settings apply to the footage as expected and without causing Photoshop File Format errors.

The z-axis handle on 3D layers works as expected.

Auto-trace has been rewritten to address problems with the new threading architecture.

The CTI and preview-time indicator (PTI) no longer disappear after scrubbing audio.

Scrubbing audio slowly now has a delay before beginning a loop around the CTI.

Adding audio markers during a preview (by pressing * on the numeric keypad) no longer causes the preview frame rate to slow down, which then caused audio to drop or stutter.

Stopping an audio preview returns the current-time indicator (CTI) to the previous position, as it did in previous versions of After Effects.

Audio now starts immediately during previews.

When the Warp Stabilizer VFX and 3D Camera Tracker effects were present anywhere in the project, they caused After Effects to become unresponsive to keyboard and mouse input during frame renders.

Fixed a problem that caused After Effects to not respond to commands to stop previews or to respond slowly when changing layer parameters, including entering text in a text layer.

The After Effects CC 2015 (13.5.1) bug fix update addresses these significant bugs and usability problems:

After effects mute audio