Normally, the blocks of ice are covering the Warhounds shield arm thingy. The blocks will stay right where they are until the Warhound stops attacking. It doesnt even freeze in the same place each time. It looks and flows perfectly in the editor, but things get screwy once it does anything but walk around. Standing? It pulls this crap:
The model additions just freeze in place. Which is a crock of bull since I've done this a million times over with it always working. Stupid Warhound.
Odds are this has to do with the actor event action used by the HOTS campaign. That event action sets what attachment point to host to and is only used by the ice block actors. Something must be going wrong with it when applied to your unit.
Which attachment point are you using? Some attachment points are static and move locations with the model but don't move in animations with the model. If you go into the cut scene editor, load up your model and go to Render -> Show Geometry -> Attachment points, the hotkey for which is just A -_- you will see all the attach points, look for the points that move with the model when it plays animations and use one of them as your attach point.
I messed around with the War hound to see if I could get it working and it seems to work fine, looks pretty sweet when he shield bashes too. I used attach point Target 05.
If you are using an explicit rotation site op this might be causing you problems that sound like maybe what you are having,
Pasted from ProzaicMuze's attachment tutorial: "Also, you must have a value for BOTH vectors even if using the default forward/facing (0.0, -1.0, 0.0) or up/axis (0.0, 0.0, -1.0). If either field is left with (0.0, 0.0, 0.0) the attachment will spin sporadically as the attachment Host moves."
I also used Target 05. I even used that same model once with the same bad results. With or without an explicit rotation, the same thing happens. This is why I'm so boggled. Again, I've done this whole process many many times with it working properly on the first try, but not with the Warhound.
Edit: Example, these work fine:
And these all freeze: (wip placement, dont judge)
I also attached pics of the fields. This is how I've always done it with success.