Quicktime Export Error: "An output module stopped responding."

Question

I'm experiencing an odd export error whenever I use any Quicktime codecs:
"After Effects error: An output module stopped responding. The file may be damaged or corrupted. You may need to restart After Effects."
Similarly, Adobe Media Encoder hangs when outputting to Quicktime codecs. Neither program makes any progress at all before the hang occurs. At that point, I have to manually "end task" to exit. Also, it doesn't seem to matter what I try to export. In AME, for example, I can simply try to convert one video format to another and have it hang, so I don't think the problem is due to a problem with the source settings or effects. Also, I'm not attempting any multiprocessing since I don't really have enough RAM for that. Other output modules work, so I'm just exporting image sequences for the time being.
System specs:
Windows 7 64-bit
Intel i7-2600k processor
8 GB RAM
GTX 580 GPU
Software:
Adobe CS6
AE Plugins include Tracode Suite 12 and Optical Flares
Quicktime 7.7.3
Any thoughts on this? I've seen very few references to this error in other places, and not really found a solution that seems to apply to my situation. Thanks in advance for your help.
Josh

Answer 1

Thanks for setting me in the right direction. Clicking through to the 25 :: 101 error page (http://myleniumerrors.com/2013/01/06/25-101-4/) led me to a reference about other software, such as remote access software, using the same ports that AE needs for communication with its various processes. In my case, LogMeIn was the culprit. I had no idea that AE even used TCP for these types of operations, so that's very helpful to know.
*EDIT*
That worked temporarily, and now it doesn't work. I ran into a similar effect when I first disabled the Windows Firewall. But of course, as I type this and piddle around, it works again. It SEEMS like if I open AME and click into the output settings and scrub through the video preview, it makes everything work when I go to actually export. That's exactly the type of thing I would say is completely unrelated under normal circumstances, but at the moment all I know is that it is currently working and I don't want to test anything else until I finish the rendering I need to accomplish today. I'll work on it more later and post an update at that time.
Thanks,
Josh