Hi, I am trying to run a multiple imputation but I keep getting this error message: There was an unexpected error in the execution of Amelia. Double check all inputs for errors and take note of the error message: Error in if (ncol(timevars)) { : argument is of length zero I have run this file before and only changed one variable so I am not sure what is happening. -- Thank you for the help, Sivan Rotenberg Doctoral Student Concordia University