First time for me creating the ticket. But the latest zip file seems to be corrupt. I cannot extract it but i can extract other things from the site.
The specific file:
http://sourceforge.net/projects/quantlib/files/QuantLibXL/1.4.0/QuantLibXL-1.4.0-bin.zip/download
Should be OK now. I have tested all the files, a couple of the others are corrupted as well and I am re-uploading them now.