OK, I went to the Technic pack website, downloaded the file, and the icon was a black page, i thought that that was weird but opened it anyway, but when i opened it, it gave me the unknown file and asked me if i wanted to open it using a program on my computer, or use a web service. I thought that it was my java so i updated it and got the same message, then i updated my java RE and i still got the same thing, I don't think i'm missing a program or anything, but like you said it could be the download, so i got a copy of a friends working Technic launcher, but i still got a blank icon with the same prompt (I will post pics, but what of?)