How To Assign Breadcrumb To Commerce Kickstart Omega Collection Or Category?
Version:
First, i usually work with the latest Crumbs version from the 7.x-2.x branch.
If you have problems with the latest version, you should report them in the issue queue. But then you can downgrade either to 7.x-2.0-beta13 or to the 7.x-1.x branch.
Upgrade and downgrade should work fine (I think), but you should clear the caches if you do. Also I don't guarantee if your Crumbs settings are all kept or some of them are lost. Let me know in the comments :)
(Probably this paragraph will soon be obsolete)

Entity parent settings:
I don't remember how much of that is in the 7.x-1.x branch. But in the recent versions, you go to admin/structure/crumbs/entity-parent/taxonomy-term and configure the parent path. That's it.

Plugin weights:
The plugin will be available as crumbs.entityParent.taxonomy_term.categories on the weights configuration form. But probably you don't need to do anything there, the plugin will already be enabled through the general wildcard "*".