spanish dictionary does not install

I downloaded the spanish dictionary and I get the following message when I try to install it from the donloaded file: ( { { { Message = “Cannot detect media-type: file:///D:/espana”, Context = ( @58c5608 } }, ArgumentPosition = (short) -1 }. It is downloaded as a file and not as an extension. I used Firefox. I downloaded the french dictionary and installed with no problem.
Can somebody help me.

@raymond47 – Please add the link to the spanish dictionary. What is the filename extension of the downloaded file?