Comment on "generalized Gibbs' approach" [J. Chem. Phys. 119, 6166 (2003); 124, 194503 (2006)]

"Generalized Gibbs' approach" of Schmelzer et al [J. Chem. Phys. 119, 6166 (2003); 124, 194503 (2006)] results in wrong conditions of equilibrium of a critical embryo with the ambient phase. The presented analysis shows the shortcomings of this approach and proves the thermodynamic conditions of equilibrium. Also, a generalized adsorption equation is obtained in different forms.