Crash happened because code could not find a valid base in current scene after adding the object, added some checks for that. Root of the issue was wrong assumptions in `BKE_object_add` logic, which would pick the first valid ancestor collection in case initially selected collection was not editable. In some case, this could pick a collection not instanced in the current scene's view layer, leading to not getting a valid base for the newly added object. Addressed this by adding a new variant of `BKE_collection_object_add`, `BKE_collection_viewlayer_object_add`, which ensures final collection is in given viewlayer.