Hi, sorry for the problem. This is due to the fact that there is a delay between the upload of the file and the propagation of the file into the mirrors. Now the file should be available for download. In any case the download directory is: http://download.savannah.gnu.org/releases/gsl-shell/ I take the opportunity to point out that the windows binaries using OpelBLAS can crash on the WAVE demo. I'm currently investigating that but it seems that this is an OpenBLAS bug on PENRYN class CPU. I will probably file a bug report to the OpenBLAS maintainers since I was able to reproduce the bug with a simple C program. In the meantime you can use the GSL CBLAS build if you need something more reliable. Regards, Francesco