362. INVALID USE OF @POSD.

The model contains an improperly formulated call to the @POSD function for restricting matrices to be positive semi-definite.  Correct usage is:

    @POSD( X);

where X is a matrix of optimizable variables. The matrix must be lower triangular, upper triangular or square. If the matrix is sparse, then it must be lower or upper triangular. @POSD statements may not appear in calc sections.