In the constructor of group effects effect_group() we check for the symmetry of the initial covariance matrix for the group using isSymmetric.matrix().
If the argument var.ini is specified with names, the function will return FALSE unless identical column and row names are defined.
We need to perform this check using unname().
Verify whether we use the function isSymmetric() somewhere else.
In the constructor of group effects
effect_group()we check for the symmetry of the initial covariance matrix for the group usingisSymmetric.matrix(). If the argumentvar.iniis specified with names, the function will returnFALSEunless identical column and row names are defined. We need to perform this check usingunname(). Verify whether we use the functionisSymmetric()somewhere else.