Conversation so far:
When did the film begin production?
The film went into production in 1991.
Where was it filmed?
CANNOTANSWER.
Who were the actors?
Julia Roberts, who agreed to play Viola.
Who else?
CANNOTANSWER.
Did she actually star in the film?
she withdrew from the film, six weeks before shooting was due to begin.
Why did she withdraw?
Roberts insisted that only Daniel Day-Lewis could play the role.
Day-Lewis was uninterested, and when Roberts failed to persuade him.
What happened after that?
Zwick got Miramax interested in the screenplay, but Miramax chose John Madden as director.

Question: Were there any more difficulties?
Self-contained rewrite: Besides Julia Roberts withdrawal, were there any more difficulties with Shakespeare in Love?