Global Redirect module after spaces / purl install does not
Sometime when using spaces and purl there are Pages Not Found even though they are there. This is one reason. There is a space that purl is looking for a url starting with eg test. Some day you make a node test/testmore and decide later to use drupal's redirect to save the url test/testmore and delete the node (or unpublish it) But since spaces and purl is keeping an eye on test it will not work.