Eclipse Indigo XML editor doesn't open proper XML files with other extensions

[serdark]

So I have a proper xml file with the ending .xcsWhen I try to open it, it give me "Unsupported Contend Type" message.There it tells me to go to the "Content Type Preference Page" and set the default editor for my file ending.Now first, this shouldn't happen, because I was specifically opening the file with the XML editor.Anyway, I go to the Content Type Prefs Page and set the .xcs ending to be opened with XML Editor by default.Same message when I try to open the file, and when it opens in the XML Editor, the elements don't appear, but instead I get "The document is empty. Right click here to insert content".One more thing: if I rename my file to .xml it opens without problems.