No, I'm not doing that now. Ok, here are my exact steps from opening Poser to the final result:

Load V4.2

Load Desir Hair from the hair library, which auto-parents to the selected figure.

Navigate to frame 30 of the animation.

Bend the V4 head and neck forwards to form a simple 'nod'.

Navigate back to frame 1.

Load VWDButtons.py.

Click VWDButtons.py button.

Load VWD Plugin.

Click Poser List button.

V4 selected, import as collision.

Desir selected, import as hair.

Open scene viewer.

Apply V4 preset, highlighting the scalp area of V4 in red.

Click compute head vertices button.

Click show hair vertices button.

Click generate springs and finish button.

Click simulation parameters button.

Inertia, floor collision, gravity, air resistance and fast move are checked.

Uncheck video.

Click start dynamic simulation button.

V4 begins to lie down in the pose I set ages ago, which is no longer active in Poser!

Stop simulation at frame 28 (it only goes up to 29 anyway) before it crashes and the results are pictured below. Notice how rigid the hair has remained also. I can't zoom in again because the mouse I borrowed has stopped working.

I'm running Win 10 Pro 32GB RAM Intel Core i7-4790K CPU @ 4.00GHz Nvidia GeForce GTX 1660 Ti

My DA Gallery: glen85.deviantart.com/gallery

Peace, love and polygons!