So ran romer with romer(iset, y, design, contrast, array.weights=NULL, block=NULL, correlation, floor=FALSE, nrot=9999) Finished with no errors but I see Warning In romer (iset, y, design, : Estimation of var.prior failed ­ set to default value romer2 finished with same message Am I in trouble? Or can I ignore this? Also Did nrot=9999, is 9999 really necessary? Or is 1000 good enough? [[alternative HTML version deleted]]