Premiere CC 2014 hangs when sending sequences to Media Encoder CC 2014

Question

  Whenever I try to send a sequence from Premiere Pro CC 2014 to Media Encoder CC 2014, Premiere immediately freezes and becomes unresponsive. AME seems to still be running just fine.
I've tried the following troubleshooting steps:
– Clearing the media cache.
– Clearing and moving the scratch disks.
– Deleting all render previews and re-building them.
– Completely re-installing all of Adobe's Creative Cloud suite.
– Importing the at-question PPCC14 project file into a fresh PPCC14 project and importing only the sequence I need to export.
– Dragging and dropping the at-question Premiere sequence into AME.
– Opening only AME and trying to drag the entire Premiere project file from Finder.app into AME's render queue. (This happens to work, as a matter of fact, however something strange happens once the sequence is in the AME queue. It pops up just fine, I can change the render settings and file export location, but when I click the green play button at the top right, nothing happens. AME doesn't hang or freeze up or anything, it's just that nothing happens. No prep, no nothing – very strange.)
– Uninstalling CUDA completely and tried using only OpenCL and software-only rendering engines.
– Opening the same at-question project on an entirely different computer.
– Trying to export from PPCC14 itself.
– Tried opening up an entirely different PPCC14 project and exporting – worked perfectly. So it must be something with this specific project file.
I eventually got it working (honestly, I'm not even sure what I did – at that point it felt like I was in a zombie state after four hours of troubleshooting and was just repeating troubleshooting steps because I was trying to hit a deadline with this export.) I was able to export it directly from PPCC14 – I was never able to get it to work with AMECC14, however.
Other miscellaneous noteworthy things: This project I'm trying to export is massive – it's a feature documentary that's about 2 hours in length. It's very complex in its edits, has a mixture of ProRes 422 files and .MTS files, and the entire project is reading media from three separate USB 3.0 hard drives. I know that's not the ideal workflow, but it's been doing just fine until this last time I tried to render out the latest export for our client.
Thanks in advance for anyone's help.

Answer 1

I've tried importing into a new blank project, but that did not seem to work. I then tried selecting the sequence in the bin and exporting that as a "Simplified Project" via the File menu. That still does not work when sending the sequence to AMECC14, but it does work when I render straight from PPCC14.
I have also found that as long as I give it enough time to load up and all that, I seem to be able to export just fine from PPCC14 itself – I'm still getting the freezing/hanging when trying to send to AMECC14 however.
Thanks for the help so far Cgunningham – I really appreciate it. I'll keep following up here if I find anything else new out.