just a note: the various dialog boxes that pop up while you were recording your screen cast don't show up in the final vid, so it makes absolutely no sense to anybody watching.
unless they have seen this before
the "combine" feature for the "finger joint" component is erroring out. when this (something in the timeline for the component going into error state) happens, it doesn't paste new as expected, and for some unknown reason defaults into the move dialog. I reported this behaviour to AD some years ago, and have seen it many times sense here on the forums, so I guess it isn't fixed.
to get around this, you can sometimes roll the timeline back to the creation of the component-

do a copy/paste new there, roll the timeline back to the end, and then fix the features that are in error state. but what you will see here is that the combine feature has lost its target and tool references-

and because of the structure of your model, nothing is available to you to use to redefine those references-

I would HIGHLY suggest the following-
-start over
-don't use primitives (sphere, etc..)
-don't use scale
-don't use move
-don't keep position captures in time line.
this model up to this point could be created in a far simpler way that would be more robust, and easier to make parametric changes to.
if your interested in that, then you could post a sketch or pic of what you want you want to end up with, along with a model of nothing but your first sketch. lots of folks here will be willing to help from there.