Issues with second beta release of OpenMx v2.0

The following issues are mentioned in the second beta's announcement:

• IMPORTANT: Windows users should NOT try to run OpenMx with multiple threads. Doing so could crash R. Users encountering unexplained crashes under Windows may wish to set the option mxOption(NULL,"Number of Threads",1).
• The log of changes in the beta version's User Guide is not current.
• Users should get into the habit of ALWAYS using the $ accessor instead of the @ accessor. For example, myModelRun@output$estimate would now be myModelRun$output$estimate. We CANNOT guarantee that every usage of the @ accessor that worked with versions 1.3/1.4 will continue to work in 2.0.
• As of this beta, CSOLNP still had a known issue pertaining to matrix conformability. This will be repaired for the next release.

Users have also reported the following:

• Confidence intervals computed with CSOLNP too frequently have a confidence limit equal to the point estimate.
• There is a specific memory leak that occurs when computing confidence intervals using CSOLNP under 64-bit Windows. I have also seen it occur under 32-bit Windows, but it seems much less likely to happen on that platform.
• There is another report of R crashing, which is a result of a bug with mxFitFunctionMultigroup(). This bug will be repaired for the next release.