Preview Files Suddenly Go Missing, Render Entire Work Area Crashes Premiere, Audio Drops Out

I opened a Premiere Pro project I was working on earlier today and it said it couldn't find the preview files, searching my system found that the files didn't exist.
Rendering my entire work area brings up the "render window" but nothing happens, if I press cancel Premiere freezes.
Started getting a strange situation error ( 26 ::139 ) in After Effects at the same time that Premiere lost the preview files and the crashes started happening. It disallows me from editing any dynamically linked projects. In Premiere the DL's just show up as "Media Pending" clips indefinitely. Importing the compositions in AE into a new project didn't fix the issue either.
The three problems above started happening all at the same time, was working through a color grade using Red Giant software when it started happening.
Also audio drops out on playback randomly in Premiere Pro, tried various audio drivers and hardware, none entirely eliminate this problem. Sometimes the audio will cut out and "burst in" distorted very loudly, which is disturbing, even when my work area is rendered. This problem has been around since I started using PP CC.
I can provide more info soon or if people want more info pls let me know, I'm very tired and I need to get this issue resolved for tomorrow, in the mean time hopefully someone can point out a general fix for these errors or knows a few workarounds. Tried reinstalling PP and AE, no luck.
Computer is a Windows 7, 64-bit. i7 950, 12gb RAM, GeForce GTX 650, programs installed on a separate internal HDD, media files on another internal HDD. But these same issues (minus the audio dropouts) was also cropping up on a core 2 duo 13'' macbook pro.
Regards,
Zach

Hi Arjun, thank you for your help.
Though that didn't work either. At least the timeline will playback but as soon as I try to render my work region or export any video Premiere freezes.
I removed all dynamic linked files as well, that didn't seem to change anything.
Something I noticed -- the render bar on the timeline that is usually yellow for edited clips that have no FX on them is all red, nothing is yellow (or green). This is a 4 minute long edit on a music video, nothing extraordinary.
I tried creating a new project and dragging a few clips in and editing them, everything went normally and I could render and export the clips. Just any rendering done on any version of this music video edit I'm working on crashes the program.
Also recently had a problem where I opened the music video project and the song that I imported (.mp3) all of a sudden has no waveform or sound coming from it. Dragging it back into the project doesn't fix it either. Workaround was using a .wav copy of the song.
Zach

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http://www.flickr.com/photos/86776146@N03/8101475154/sizes/l/in/photostream/
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http://www.flickr.com/photos/86776146@N03/8101463115/sizes/l/in/photostream/
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Message was edited by: Mike542

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http://www.flickr.com/photos/86776146@N03/8114886495/sizes/l/in/photostream/
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QUES 1
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QUES 3
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