Once I tried to summon Solaire for the Gaping Dragon, but it was not there. I talked to him after the boss in Undead Burg, and was able to summon him for the Gargoyles. I was also human and know his sign should be above Gaping's fog door near the pillar. I was able to summon him later at Anor Londo.
One of my friends said the same thing happened to him, but at Anor Londo. He said he saw it about four times, but then it was not there.
One of my friends said the same thing happened to him, but at Anor Londo. He said he saw it about four times, but then it was not there.