I'm now using OpenMx to do some heritability analysis, and met a probelm. When installed the OpenMx on R3.01, it indicated that the OpenMx could just be insatalled on R2.15. And then when I installed OpenMx on R2.15, I could not install some packages such as "psych" , which required to be work in R3.01.
Please help me for how could I solve this problem.
Many many thanks.