Hi Matt and Jeff, I just upgraded to 0.8.061, and it works in that version, so apparently whatever the bug was has been fixed. Thanks for checking it out for me! --Scott Calvin Faculty at Sarah Lawrence College Currently on sabbatical at Stanford Synchrotron Radiation Laboratory On Jan 8, 2011, at 7:08 AM, Matt Newville wrote:

Hi Scott,

Like for Jeff, the chi(k) LCA fit works for me with Athea 0.8.061 on OSX 10.6. If I had to make a guess or recommendation for something to try it would be this:

Standard2 extends to pretty far out in K (>20Ang^-1) and Standard2 is pretty glitchy beyond 12Ang^-1 or so. You might try truncating the data and/or removing the obvious glitches before doing the background subtraction and LCA fit. Again, that's a guess.

Does the latest iXAFS3 not work for you on 10.5.8? I haven't tried it, but the intention was that it would work on 10.5.

--Matt