FYI, whenever I run an mxModel that includes mxRObjective() for its objective function, and then try to get its summary output, it throws this error:
Error in match(x, table, nomatch = 0L) :
no slot of name "dims" for this object of class "MxRObjective"
--Rob K.
This works for me in the trunk. I think it got fixed with the shift to expectation-fit.
The Hessian comes back weird and different from the same model as a row objective.