Hi Matt, Thanks for the information. I could not get the runner.exe to work. So installed the updates directly as you suggested. It works perfectly. Aranwela These were the steps I have followed. Updating Ifeffit manually (if, somehow, it does not update automatically) 1. Check the latest update installed (typically in C:\Program Files\Ifeffit\config\iff_xxx). In my case it was iff_009. 2. Then check the current available update level from the cars webpage: http://cars9.uchicago.edu/~ifeffit/updates/current.dat At present it is at 013. 3. Download the missing updates from http://cars9.uchicago.edu/~ifeffit/updates/iff_XXX.zip Remember you need to change XXX to the appropriate file # (to 010 for an example). ( I had to download iff_010, iff_011, iff_012 and iff_013 and saved them on to the desktop). 4. These are zipped files. Need to unzip those into the C:\Program Files\Ifeffit folder. But one has to do this in sequence (it is said). ( In my case I unzipped 010 first then 011, next 012 and 013 after that. Unzipping is easy in windows 7. Just right click on the zipped folder and select ‘extract all’ then browse to the Ifeffit folder (In my case C:\Program Files\Ifeffit). It will prompt you to choose between two or three options. (In all cases I chose ‘copy and replace’ or just ‘replace’. That’a all. Everything should work perfectly. Date: Mon, 16 Aug 2010 14:06:47 -0500 From: Matt Newville To: XAFS Analysis using Ifeffit Subject: Re: [Ifeffit] Ifeffit Digest, Vol 90, Issue 7 Message-ID: Content-Type: text/plain; charset=ISO-8859-1 Hi Aranwela, Thanks for the report. I do think this is a permissions problem. That's not to say it's not a real problem, just that it should be solvable. I just tested this by resetting the "update level" in config/current.dat, and forcing the updater to run. It worked fine to download and install the update. That was on a Mac running Windows 7 (64 bit) as a virtual machine. The account I used does have full Administrator control. The process running the updater definitely needs to be be able to write to C:\Program Files\Ifeffit (or wherever you installed to). Would you be willing to try to download the update zip file (say, iff_013.zip) and unzip it into your installation directory, as described at http://cars9.uchicago.edu/ifeffit/IfeffitOnWindows/WinUpdater and let us know what does and doesn't work? I'm sure that others would find your report helpful. Cheers, --Matt