When you get a reply reply to the email changing the subject to Possible false +ve detection and name of detection. Say why you think the file is ok and wait for it to be cleared. If no fix in 5 days post back here with teh analysis id you get in the reply and I will contact a lab tech to expediate the fix.
To email the file you may need to disable the Mcafee real time scanner till you email the file. Ensure you reenable it.