I am having a frustrating issue using Trapcode Particular. It is set to Sprite and I am trying to use "Particle > "Rotation" > "Rotate Z" to counter the rotation of my Camera layer, and using a keyframe to bring the particle layer back to 0, but no matter what I try to do, the sprite particles don't rotate at all after the initial angle, even when the "Rotate Z" value is clearly changing. Is this an issue in the plug-in itself?
Below is what is going on. The "Rotate Z" is set to -45 degrees, but none of the sprites are rotated that way because of the 0 degree keyframe at 04:00f.
That's nonsense. You don't understand how the effect works. These parameters are applied when the particle is born. You can't change them afterwards for animation.
Please spend some time on the Red Giant site learning about Particular. I could easily spend the better part of a semester teaching Particular. There's that much to learn.