False positive on Realplayer update?

For a while now, Realplayer has been offering what they term an "Important Update". Every time I've authorised the update, Bitdefender aborted the update.

When I do a scan of the installation executable, the Bitdefender scanner declared it clean. Yet when I try to execute it, bitdefender still kills it, claiming it to be malware. The Realplayer website confirms a new update has been released. so:

  1. Why is the update aborted every time by Bitdefender
  2. What can I do to work around that update

Thank you!