Why was Bapusaheb Dev so upset and confused after his Udyapan ceremony, even though he had invited Sai Baba?

Bapusaheb Dev felt upset and confused because he had lovingly invited Sai Baba to his Udyapan ceremony, and Baba had promised to come. However, Dev was expecting Baba to appear in His familiar physical form. When the ceremony concluded and Dev had not seen Baba as he anticipated, he felt that the promise had been broken and that he had been deceived. As detailed in Chapter 40, he expressed this deep disappointment in a letter to Jog, lamenting that despite his great effort and waiting, he had no experience of Baba's promised arrival and felt that everything had "turned out otherwise."