When changing the taxonomies' machine names in CK this notice pops up:
Notice: Trying to get property of non-object in commerce_kickstart_taxonomy_preprocess_views_view() (line 41 of.... commerce_kickstart/modules/commerce_kickstart/commerce_kickstart_taxonomy/commerce_kickstart_taxonomy.module).
It 's not really a bug is it? But a lot of people run into it (try googling it and you will find a lot of CK sites stuck on this). Disabling commerce_kickstart_taxonomy is the easiest way to get rid of it, but then one of course looses the build in Product Catalog.
Perhaps a warning not to change the machine names? Is there a way to properly change them? Rebuild the search index with the new names didn't do it for me, but perhaps I didn't do that properly.