What firewall/antivirus software are you using?
After Effects communicates with the background camera tracker process using TCP, and some overly aggressive firewall/antivirus software can block this communication. That may be the problem in your case.
See this document for a closely related issue:
I have the same problem as you have.
Either on my imac, or my latest MB pro retina.
I have no third party antivirus/firewall installed and I'm stuck with those features. Useless for me...
Please ADOBE fix that problem asap !!
What type of footage? I have a new MacBookPro R and everything works just fine. Always has. You are probably looking at a problem with a codec or with some other 3rd party software that's fouling things up.
I finally found out what the problem was. if that can help someone...
It 's a third party software called "popclip" that was causing problems.
After killing that process, everything is back on track !!
So don't launch popclip if you intend to work with AE.
you're welcome ! I lost two weeks on that one !
YES. A thousand upvotes yes. Filing a bug report with Popclip now.
I spent the whole day to find the cause of the problem.
I humbly thank you for your help
how this software "PopClip" not let work, do not understand