Conversation so far:
When was Wish You Were Here released?
Most of Wish You Were Here premiered on 5 July 1975, at an open-air music festival at Knebworth.
Released in September.
Which album was it on?
their ninth studio album, Wish You Were Here.
Did they go on tour?
CANNOTANSWER.
Did they have any problems when producing this album?
Initially, they found it difficult to compose new material; the success of The Dark Side of the Moon had left Pink Floyd physically and emotionally drained.
Why were they having trouble?
Mason's failing marriage left him in a general malaise and with a sense of apathy, both of which interfered with his drumming.
Did they consider breaking up?
Parsons declined an offer to continue working with them, becoming successful in his own right with the Alan Parsons Project.
What  was that project about?
CANNOTANSWER.

Question: ANything else interesting happened during this time?
Self-contained rewrite: Anything else interesting happen during Pink Floyd's Wish You Were Here album release other than Parsons leaving?