Poser 7 Animation issues

I think I can chalk this one up to forgetting the basics, but I never had the issue before and I can't work out what I'm missing.

100 frame animation.
Tpose at frame 1
Initial pose at frame 2 and final pose at 100.
Frame 2 and Frame 100 are basically reversals, it's a simple stand with the torso and neck/arms shifting.


Inverse kinetics off

Frames 3 through 29 just go crazy (arms twisting and contorting, folding in on themselves etc etc)... and I seem to recall poser having issues with the t frame.. but it IS transfering to SL when I do a preview upload.

I've been reading the various faqs and watching youtube tutorials... but aside from going back to Qavimator I'm not sure what I'm doing wrong.

Any ideas?

Break splines between frames 1 and 2, and/or use linear interpolation for the problem joints.

You just got the answer in the previous post, but here is something to consider for your workflow.

I add the T-pose frame as the very last step in creating the animation.

My last steps work like this:

1. Save the final animation when I have it set the way I want it to a .pz3 file. (The animation does not yet have the T-pose frame, and just the key frames I needed.)

2. Make every single frame a key frame (which has the same effect of breaking spline in every frame; but it keeps all the previously extrapolated frames as they were).

3. Go to frame 1 and add the T-pose.

4. Export to .bvh.

I almost always make full-looping animations, with first frame identical to last frame while creating the animation, so putting the T-pose in frame one also effectively removes the extraneous first frame. If you're not making a fully looping animation, you'd have to set it up differently.

That was it... I did break spline on the wrong frames. Thank you both for the helpful info.