When I run the simple regression example with matrix specification i get
> uniRegFit <- mxRun(uniRegModel)
Running Simple Regression -- Matrix Specification
Error: The F matrix in model 'Simple Regression -- Matrix Specification' does not have column names.
I've set up some dummy data to feed into the model
x <- rnorm(40);
y <- 2* x + rnorm(length(x), sd=0.5);#
SimpleRegRaw <- data.frame(x, y)