Here's a link to a UB version of the xray.jit object:
www.mat.ucsb.edu/~whsmith/xray-mac-UB.zip . These were compiled on a
PPC and I haven't been able to test them on an intel mac yet, but they
should work. This zip just contains the externals. A more thorough
package containing help files etc. is forthcoming, but until then,
download the previous distro and use the helpfiles from that package.