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I wouldn't be at all surprised if I turned out to be doing something boneheaded, but I've *tried* to follow all the relevant rules ... Based on a clean SVN checkout of R-devel r61617, building in a separate directory, I end up with Error in eval(expr, envir, enclos) : object '.print.via.format' not found Has anyone encountered this or does anyone have any further

Hi, I am trying to runn a age-period-cohort model, but here is what I am having problem with, hope you can help me! This is what I am trying to do: sumzero_a<-((A-min(A))/5+1) - mean((A-min(A))/5+1) where A is my age variable (numeric, the mid-point of a five-year age group), but I got the following error: Error in min(..., na.rm = na.rm) : invalid 'mode' of argument I am pretty