Dear colleagues,

I am fitting a bivariate-RRM model to estimate the genetic parameters/correlations between two traits with different number of records, e.g., trait 1 has 320 observations (repeated measures) taken at time 1 of recording, and trait 2 has 61 observations taken at time 2. Normal repeatability model fitting INDESCR option did not work for me due to errors in covariance matrix. I am moving to RRM but example 11/A of wombat I am following is less specific. Can someone who fitted models of the same scenario assist me?

Thank you,