Something is messing with your local TCP port connections used by the processes to communicate with one another. You will have to provide a process list dump from your activity monitor to even begin to make sense. If it works as root, you either have insufficient user privileges, your firewall is somehow configured oddly or another process is simply usurping those ports...
I went to the Apple store today and had them officially reset/repair my user permissions on my machine. That didn't work right off the bat. So the Apple 'genius' moved all Adobe .plist files to another folder and told me to restart all apps that were giving me issues. Things then worked flawlessly. He moved only .plist files back into Adobe's area on my machine that needed to be there – he trashed the rest.
I thought things were fixed, but this evening when trying to apply a Warp Stabilizer VFX effect to a time-lapse .jpg sequence inside After Effects CC, the same error popped up and wouldn't stop popping up until I quit both After Effects CC and Adobe Media Encoder CC.
I am now exporting that time-lapse from AE using AME and things were working, but as I was typing this, I received an "Adobe QT32 Server quit unexpectedly" error. The render in AME seems to still be working, however. I'm not sure what the purpose of that error message is...
Any other ideas on this? Please help! Would completely wiping my machine and starting from scratch help? Thank you!
I just thought of this, but I have an application called "Little Snitch" installed on my machine as well. I have it set to allowing all incoming or outgoing connections for all Adobe applications – but you say it may be other applications using the ports Adobe applications need?
It does seem to be tied to Adobe's dynamic link feature as well. I have no hard proof of this, but it seems that when I start trying to use Adobe's Dynamic Link feature is roughly when errors and issues start popping up.
Thanks so much for your help!
Moving this discussion to the After Effects forum.