The problems with file downloads hosted by SourceForge.net are now solved so I redirected all downloads back to their servers. It was a very unfortunate coincidence that the problems started just at the time of the first release of Saladin, but thanks to the hard work of the SourceForge.net staff everything is back to normal.
The file downloads service hosted by SourceForge.net is still broken (after the attack which happened on 27th of January) and installer packages downloaded from there are incomplete. For now please download all packages directly from the downloads page on my web site. I will redirect those downloads back to SourceForge.net once it is usable again. I'm sorry for the inconvenience.