Additional information can be found in Liszt's letter to an unknown person in Leipzig, in: La Mara (ed.): Liszts Briefe, Band 2, No.398. According to this, at the concert on 1 June, the works by Mendelssohn, Schubert, and Chopin were performed much against Liszt's wishes. Liszt had wished that only works of the "progressive" line, as preferred by him himself, were to be played. He urgently asked the addressed person to keep his taking part in details of the program's composition secret.
