Fresh off the heels of 1.2.1, the latest version of OpenMx 1.2, 1.2.2 is available for download. 1.2.2 contains a bug fix related to PPML transformations in OpenMX. 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'). The complete change log since the 1.2.1 release is below.

Release 1.2.2-1986 (March 22, 2012)

• setting default value for mxOption("UsePPML") to "No" until
  the feature is adequately tested. Added test enforcing default
  value to test suite.