It tries to download the source from http://purebasic.myftp.org/files/3/projects/hamachi/v.${PV}/gHamachi_${PV}.tar.gz but this URI currently doesn't exists. Source can be downloaded from http://harvie.cz/wan/tools/hamachi/gHamachi_${PV}.tar.gz Checksums and size match with those listed in Manifest.
The second link works, but that appears not to be the upstream one. Just looking at http://tools.harvie.cz/ you can see a directory called "warez" sigh
Ah, you're right obviously. Now I see that upstream at http://penguinbyte.com/ write: "Site had a blow out... trying to get everything back online... sorry all". So you can temporarily change the link to something working or just wait until upstream goes online.
Removed from tree.
