Hi Gerrit, I can answer one of your questions:
- Is it possible to do an offline installation on a computer not connected to the internet? (e.g. by manually loading the updates-files and changing "update_site" in updater.ini)
Yes, it should be possible to change update_site in updater.ini. You'd want to copy the contents of the current update site to another web site. I don't know if anyone else has tried this, but I have used this setting for testing purposes. In principle, we could put the updates on Sourceforge.net as well. You can also manually download all the ifup_XXX.zip files, and unpack them with WinZip or any other program in order (so that ifup_002.zip overwrites updates from ifup_001.zip, and so forth) into C:\Program Files\Ifeffit, or wherever you installed Ifeffit. See http://cars9.uchicago.edu/cgi-bin/ifeffit/faqwiz?req=show&file=faq02.008.htp for more details about the updater. --Matt