Hi Dan, Your project certain exposes a problem. I see the same behavior on the computer I am sitting at right now. The problem seems to be in a part of the code I thought I didn't touch between 0.9.11 and 12, so I am surprised that it cropped up today. Sigh..... I'll look into it once I am back in my office and let you know what I find. B ________________________________________ From: ifeffit-bounces@millenia.cars.aps.anl.gov [ifeffit-bounces@millenia.cars.aps.anl.gov] on behalf of Daniel Whittaker [daniel.whittaker@postgrad.manchester.ac.uk] Sent: Thursday, September 27, 2012 10:23 AM To: XAFS Analysis using Ifeffit Subject: [Ifeffit] Issue On Re-Open of File in Artemis Hello User Community, I am having an issue with a project i was working on yesterday - one i hope can be resolved rather easily. I was working on the project yesterday then i saved the file and closed Artemis and all was well. However, today when i try and open the file and continue working on it it instantly crashes the software on pressing FIT. First thing this morning i updated to version 0.9.12. I am modelling using the first shell fit that is built in - possible source of error? I dont know the root cause of the issue as everything i have done here i have done before with other datasets with no issue. I have tried starting from scratch and reinstalling the software too but the issue persists - it all works well (when startingg from scratch) until it is saved and then tried to reopen. [Using Windows XP SP3 Install version 0.9.12] Any help would be much appreciated. Regards, Dan