Why does Document ID link open Property page instead of document?

Question

When I click on the DocumentID link for an EMF file, instead of viewing the file, I see the property page for the file. The link works for all of the TIF images in the same library. But not for the EMF files.
When I click on the Name link, I can view the file.

Answer 1

I had a similar problem with PDF documents and clicking their DocumentID link. In that case, it turned out to be that the PDF file type (or in your case, the EMF file type) was not listed in the File Types section of the Search Service Application in SharePoint 2010's Central Administration.

Edit: I believe we also rebuilt the search index once this new file type was added.