This version of OpenMx fixes a number of small bugs:

• detect non-conformable arrays for elementwise division in the front-end
• fix crash in Hessian calculation when no objective function is specified
• throw an error if standard errors are enabled and Hessian calculation is disabled
• bug fix in multiple-iteration upper confidence interval estimation
• support for 32-bit and 64-bit gcc4.7 on linux

OpenMx has a new feature for beta testing available in the trunk for users who build OpenMx from source. This feature is not included in the current (1.3.1) binary release, but will be available in an upcoming beta release.

The latest version of OpenMx 1.3 is available for download. OpenMx 1.3.1 contains a bug fix described below. For more information on OpenMx 1.3 features, see here. Use the installation command in an R terminal source('http://openmx.psyc.virginia.edu/getOpenMx.R').

Release 1.3.1-2179 (October 17, 2012)

• bug fix in mxRun() where a model with grandchildren submodels can have its internal state corrupted.

We are pleased to announce the next major release of the OpenMx library. Use the installation command in an R terminal source('http://openmx.psyc.virginia.edu/getOpenMx.R'). There have been several minor enhancements to the OpenMx library interface (all changes are backwards compatible) and several performance improvements. We have implemented a dependency tracking system in the OpenMx backend. If an algebra is independent of all the definition variables in a FIML calculation, then the algebra is computed once per FIML iteration.

The latest version of OpenMx 1.2 is available for download. OpenMx 1.2.5 contains several fixes which are described below. For more information on the general features within the OpenMx 1.2 series, see here. Use the installation command in an R terminal source('https://openmx.ssri.psu.edu/getOpenMx.R') to install OpenMx 1.2.5.

The beta release of the OpenMx 1.3 series is available for download. Use the alternate installation command in an R terminal source("https://openmx.ssri.psu.edu/getNewOpenMx.R"). The new series of OpenMx is the result of nearly 3 months of development and much feedback from the user community.

The latest version of OpenMx 1.2 is available for download. OpenMx 1.2.4 contains several fixes which are described below. For more information on the general features within the OpenMx 1.2 series, see here. Use the installation command in an R terminal source('https://openmx.ssri.psu.edu/getOpenMx.R') to install OpenMx 1.2.4.

Release 1.2.4-2063 (May 22, 2012)

added argument "name" to omxSetParameters()

error checking for 0-length arguments to mxPath()