I Had a feeling something like this was coming due to the forum changing up a bit! As a person who (though a very long story) couldn't use the DLS in TRS2006, the razor back kept my interest in the game going, glad to hear it might be back and looking better than ever!
As a guess your browser is 'showing' the file rather than downloading it, try right click > download link as ... or whatever your browser has as the equiv
As a guess your browser is 'showing' the file rather than downloading it, try right click > download link as ... or whatever your browser has as the equiv