After sourcing the latest version of OpenMx on a Windows XP machine running R 2.9.2, we get the following error upon 'require(OpenMx):
Loading required package: OpenMx
Error in registerS3method(Info[i, 1], Info[i, 2], Info[i, 3], env) :
no slot of name "methods" for this object of class "derivedDefaultMethod"
In addition: Warning message:
package 'OpenMx' was built under R version 2.11.0
Any suggestions on how to fix this?
Roseann & Hermine.