Conversation so far:
When was Pink Floyd's album Wish You Were Here released?
Wish You Were Here was released on September 12, 1975.
Did Pink Floyd go on tour for Wish You Were Here?
The band played much of Wish You Were Here on 5 July 1975 at the Knebworth music festival.

Question: Did they have any problems when producing this album?
Self-contained rewrite: Did Pink Floyd have any problems when producing Wish You Were Here?