It just tried to do the "Bloodhound.Exploit.109" which according to google search is
"Bloodhound.Exploit.109 is a heuristic detection for Apple QuickTime RTSP URI Remote Buffer Overflow Vulnerability. An attacker who exploits this vulnerability could perform a denial-of-service attack against a vulnerable version of QuickTime, or potentially execute arbitrary code with the privileges of the logged-on user. The exploit is triggered by opening a specially-crafted QTL file.
Applies to: Apple QuickTime Player 7.1.3
Files that are detected as Bloodhound.Exploit.109 may be malicious."
This may be why some of you don't see it, you don't have QuickTime installed.