In the opening credits, Breen's return address is shown as 344 W. 49th Street, but a few minutes later he is shown living at 334 W. 49th Street.
At the point at which Sally's musical "Never Say Never" has its opening night, Douglas Breen is unemployed (and possibly homeless) and, thus, could not possibly afford an expensive ticket for the opening night of a Broadway show.
The policewoman, while guarding Sally Ross, is wearing high heels.