Enzyme

Hello dear Paint.NET crowd. I absolutely love the Paint.NET and appreciate this amazing open source very much. I have been trying all day to install two much needed plugins and it put my to tears. I really wish i could do it finally. (I have been trying to install the two plugins on my desk-top (Vista) and notebook (Windows7) and got the same result). When i click <save> in the File Download i get Adobe Reader note, saying: "Adobe Reader could not open "Oblique[1].zip" because it's either not a supported file type or because the file has been damaged (for example, it was sent as an email attachment and wasn't correctly decoded)." What can be done about that? Your help would be greatly appreciated.