EMAN 2.06

Release Date



This is the final release version before 2.1, which will be a major upgrade. We believe this release to be quite stable.


The EMAN2 binary and source downloads also include SPARX !

Please follow the installation instructions at:


Documentation is provided through the EMAN2 Wiki

Windows users - This version includes major improvements for windows. See the Google Group for more.

Mac users, we do not support 10.5 since there are a number of issues with OS provided dependencies not working as they should. The

Linux users

Linux x86 is for 32 bit Linux. Linux x86_64 is for 64 bit Linux. use command 'uname -i' to determine whether your Linux is 32 bit or 64 bit.

If you see the following error message when your run EMAN2 GUI program, please remove the Qt libraries (rm -rf libQt*.so) from your EMAN2/lib directory: "Cannot mix incompatible Qt library (version 0x407**) with this library. (version 0x40703)"

On some Linux distributions, you may encounter occasional errors with GUI programs, such as: "Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion `GTK_IS_WIDGET (widget)' failed", please install and run qtconfig-qt4, and set the GUI style to motif.

Version changes

  • The e2projectmanager GUI is now completely usable for reconstructions, and a new tutorial has been written for it. While it will continue to be expanded in the 2.1 release, this is now the recommended GUI (replaces e2workflow).
  • Significant speed improvement overall due to various internal optimizations.
  • Major improvements for Windows platform. Now possible to do full refinements using the GUI on windows.

Caveat: On Win 7, do not click on GUI programs when they are 'busy', or windows 7 will sometimes kill the program and cause file corruption.

  • e2refine_evenodd.py, 'gold standard' FSC test has minor improvements. This implements a proper bias-free resolution test, which reviewers are beginning to request.
  • Single particle tomography programs have been heavily reworked, and the tutorial has been updated. All such programs now have names starting with 'e2spt'.
  • HDF5 performance dramatically improved.

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