I got this message from a BBC source:

A team from BBC Arabic was in Cairo to record a big prog about elections, with audience and invited parliamentary candidates, including MB of course. They agreed with a local video company, booked studio and in the last minute .. guess what? The company got a phone call , and the whole thing was canceled on spurious grounds of course. now they are coming home empty-handed.
If any further evidence was needed for the govt growing paranoia.