Major audio problems...

Question

Okay...(breathing into a brown paper bag) It started with some imported sequences that produced a heavy, harsh audio pops when scrubbing though, and then mostly no audio when playing down--mostly. Note, this was by no means the irksome "poppy, static-sounding" audio quirks we've gotten to know well in Premiere Pro CC. These sequences were imported into a fully functional system: CC, 7.2,  OSX10.8.5, 3.33 GHz 6-Core Intel Xeon, 32 GB 1333 MHz DDR3 ECC, AJA KONA 3. All 23.976 Pro Res 422 LT converted from RED EPIC.
I found that when matching-back to the clip, original clip audio was fine...no pops, no playback problems. AND, when overwriting the clip onto itself (onto these imported, selects sequences) things played fine. Sooooo, to get through the day, I matched back all the clips and blew over their former selves. Things were playing fine then, I could cut and integrate these clips into existing sequences. All good, we might say. Still with me? That was Thursday. Friday morning, I found that MOST sequences, including b-roll selects built 6 months ago, were now producing these heavy, doomsday pop when scrubbing and then essentially not playing any audio. Meters were flat. Nevertheless, waveforms completely present and visible on the timeline. Next, I noticed that the audio line on certain channels of certain clips was missing (see screenshot) and when double clicking said timeline clip to load it into the clip window, we'd actually see a missing slider and the DB level would read "nan." (see screenshot of that and next to it, the same clip from a match-frame for proof of both channels)
We've tried: New projects,repeated pref-trashing passes, un-installing the AJA drivers and PP completely, re-installing from the Cloud...and nothing. Next, we rolled back to 7.1. Started a new project and imported a test sequence from the original. Same story. It seems inconsistent, random, maddening. Scary that a full software reinstall and roll-back didn't fix this. That is to say, we're running a version of Premiere from a little ways back, using sequences from a little ways back, with no hardware changes to our system...
Please advise.

Answer 1

After running some smaller projects have not seen this issue since february. The word on the street that is that it was due to a PE issue. Actually PE 3.0, I think. However, reading through some other threads, this is not an PLuraleyes issue exclusively.
I am back at the editing helm now after shooting a documentary project with lots of clips. We did a bit of early syncing with PE six weeks ago. In the meanwhile we shot some more stuff and I am back editing.
I switched the project to my macbook from my iMac and while I was waiting for the tedium of reconfirming & redrawing of waveforms, the audio started to disappear and now nearly all the clips on the timeline and in the bins have "nan"(not a number) value attached.
I wasted time again on tech support & now I remember I went through the same rigmarole in feb. Took an age to import project into AE. Rexported into Prem. Waste of time. The timeline is corrupt. Same as last time. So now my project is broken. Even if I fixed the hundreds of clips(manually reset all nan values), who is to say the progressive bug doesn't just come back.
Many more hours wasted-Please read my posts in feb
Re: Audio Disappearing, No Waveform, No Audio
VERY DEPRESSING to see this is still an issue. I was ready to move to another NLE then.
As mentioned by another post. THIS IS A MAJOR ISSUE as when it happens in a project there seems to be no way out and, as in my case, I have wasted many more hours and days problem solving rather than creatively editing.
Dave