Error in as.double(y) : cannot coerce type 'S4' to vector of type 'double'

Question

[jansha.1997]

Hi there. I was running the MI package for imputing the missing variables with the code below: data <- read.csv("data.csv")

library(mi)
library(doParallel)
mdf <- missing_data.frame(data) 
show(mdf) 
mdf <- change(mdf, y = c("X"), what = "type", to = c("un"))
mdf <- change(mdf, y = c("X"), what = "type", to = c("ir"))
image(mdf)
rm(data) #good to remove large unnecessary objects to save RAM 
#options(mc.cores = 2)
#imputations <-mi(mdf, n.iter = 30, n.chains = 4, max.minutes = 20)
registerDoParallel(cl <- makeCluster(getOption("mc.cores", 10), setup_strategy = "sequential"))
imputations <- mi(mdf, n.iter = 30, n.chains = 4, max.minutes = 20, parallel=FALSE)

stopCluster(cl)
show(imputations)
plot(imputations)

Unfortunately, as it reaches Plot it gives me an error: Error in as. double(y): cannot coerce type 'S4' to a vector of type 'double'.

Also while running the iteration in 4 chains, certain iterations are not converged too. It would be helpful if I could solve this problem.

[ATpoint]

Does it run properly if you leave out all the parallel code and run it plain and simple on a single input object?