The latest version of OpenMx 1.2 is available for download. OpenMx 1.2.1 contains a bug fix and several improved error messages described below. For more information on OpenMx 1.2 features, see here. Use the installation command in an R terminal source('https://openmx.ssri.psu.edu/getOpenMx.R').

Release 1.2.1-1979 (March 21, 2012)

• bug fix for interaction of matrix transpose and square bracket substitutions
• renaming mxLISRELObjective() to imxLISRELObjective(), LISREL objective function is not yet implementated.
• improved error messages when a free parameter has multiple lbounds/ubounds
• improved error messages when passing strings into mxModel()