I'm new to this stuff so please accept my apologies if this is a stupid question with a simple answer. I have a postcard program which works perfectly well on one domain. I also want to use it on another domain - on the same server. So I made the changes, uploaded it all and the index page shows beautifully. But when I choose a card and click next, I get a File Download box telling me card.cgi is an unknown file type and do I want to download the file or find a program online to open it. Is the file corrupted or have I done something wrong? Any guidance appreciated.