Drupal Views page URL problem
do not use node/%/.. as your path, this will disturb the default routing system.


  change the view's path to gallery/% or something.


if you want to keep this url, register a local task like here How to add a local task tab to node view?

and in this page callback you can display the view with views_embed_view,
 in this case you will remove the path of the view, or change it to a test-path.

but still, the alias with /gallery needs to be registered too !