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Hi, Does anyone know what the error message mean? > Boot2.Pillai <- function(x, ind) { + x <- as.matrix(x[,2:ncol(x)]) + boot.x <- as.factor(x[ind, 1]) + boot.man <- manova(x ~ boot.x) + summary(manova(boot.man))[[4]][[3]] + } > > man.res <- manova(as.matrix(pl.nosite) ~ + as.factor(plankton.new[,1]))$residuals > boot2.plank <- cbind(plankton.new[, 1], man.res) > boot.sep <- boot(boot2.plank, Boot2.Pillai, R = 1000, + strata = plankton.new[, 1]) Error in summary.manova(manova(boot.man)) : residuals have ra...