Hi,

We've encountered an error when installing tool dependencies, in particular, with snpEff among others, on the 15.07 branch. We've tracked it down to this particular commit and have commented on the issue there.
https://github.com/galaxyproject/galaxy/commit/91bf1d37db59bc69404e9831893bd97ae7d378f3

Should we log a trello issue?

cheers,
/Nuwan