Hi Craig, I'm cc'ing this to the Ifeffit mailing list, as others may encounter similar problems. It's not your novice-ness that's causing the problem; it's a version issue. I wrote the ZnO example when an older version of the software was current. Since then, "dr" became a reserved variable, and can't be user defined. (Bruce could probably give the reason for that change.) I fixed that, but it looks like the older version of the tutorial is being included with the current distributions of Ifeffit and friends. We'll fix that. In the meanwhile, though, you can just change the variable names by hand to "delr" or something like that (you have to change them in both the GDS screen and the path screens, or course). Sorry about that. Incidentally, there's a related bug in Artemis itself. If you have it automatically come up with variables for you on a new fit, it will name one "dr", and then can't do the fit! :( --Scott Calvin Sarah Lawrence College At 01:24 AM 1/9/2007, Craig Klauber wrote:

Dear Scott, Sorry to bug you on what may be a very trivial issue - but if its a quick fix a bit of guidance would be very much appreciated. I've been working through your ZnO demo tutorial on Artemis and everything worked well until I received the following warning message from Artemis after trying to Fit at the beginning of part 2. The Fit then aborts.

"This parameter uses a name which has special meaning in Ifeffit: dr You must change this parameter name before attempting to fit. One common example of this sort is a variable named "dr1", which should be changed to something like "dr_1" or "drone"."

The warning message doesn't make a great deal of sense as "dr" is a defined parameter within Artemis.

Running ifeffit-1.2.9-mac10.4_horae64pre_pkg on a Mac PPC G5 Dual 2GHz under OS X 10.4.8. Presumably I'm doing something dumb (very much the novice EXAFS is not my area). Have checked a number of the Ifeffit Archives, but so far have not spotted a reference to this.

Kind Regards Craig Klauber

__________________________________________________ Craig Klauber CSIRO Minerals PO Box 90 Bentley WA 6982 AUSTRALIA Ph: +61 8 9334 8060 Fax: +61 8 9334 8001 craig.klauber@csiro.au CSIROTEL: 99 8060 http://www-wf.minerals.csiro.au __________________________________________________