This error might occur when you point to the location where file is not located. You are trying to render a partial named "label" under partials folder but error message implies it is searching for dyncamic file under partials folder. Can you check in the rholog "Is this the error message shown for the above render?"
I tried to render a partial in Product index page as
<div data-role="header" data-position="inline">
<%= render :partial => "partials/label" %>
I kept "_label.erb" file under app/partials folder. It is working fine in Andriod
Hope this might help you to sort out the issue
Not aware of partial rendering Ruby syntax, but... rhodes bundler does compile <filename>.erb -> <filename>_erb.iseq