Adobe Premiere CC Crashes When Selecting Multiple Clips

Question

This project was already derailed by multicam, now that I've got my assembly edit ready to go, I've discovered a new show-stopper:  Premiere Pro CC crashes when I select multiple clips on the timeline.  I can't select more than 3 clips at a time, or the entire program comes crashing to it's knees.  Anyone else experiencing something like this?  Can anyone else reproduce this behavior? 
Here's a video of the experience:
http://youtu.be/DPOUinOSzDE
Any word on an update?
ASUS G75VX
Windows 7 Pro, 64-bit
GTX 670MX, 3GB GDDR5
16GB RAM

Answer 1

Progress.  I've been able to isolate the problem.  On my timeline I have some "regular" clips and some "merged" clips.  Regular clips are from either source: a Canon 7D (MP4 / MOV) or a Canon VIXIA HF G20 (AVCHD).  The Merged clips are only from the Canon 7D only (for video) and an audio recorder (MP3 at 320kbps).  The 7D footage is 1080/24p.  The VIXIA also shoots in 24p.
Since "Merge Clips" sync on audio is not working for me, I've employed my former CS6 workflow:
1. Sync all of the video and audio clips through PluralEyes 3 resulting in a preliminary sequence, "Clips_to_be_merged_sequence".
2. I work my way through each of the clips, adjusting the audio track(s) for variances in drift between the on camera sound and the audio recorder.  I do this enabling "Audio Time Units", rather than video frames, so I can get extremely acurate.
3. When I have a timeline full of nicely syncronized audio/video pairs, I merge clips, one painstaking clip at a time (of course I set up a keyboard shortcut for this).  For the merge, I "sync on In points".
4. The merged clip is added to my project panel.
5. Now, when it comes time to choose my sound bite selects, I load the merged clip into the Source panel and mark my Ins and Outs. 
6. Time to create a subclip, of course with the new SOFT handles. (I'VE BEEN WANTING SOFT HANDLES FOR A LONG TIME!!!)
7. The subclip appears to be properly created and placed into the Project panel.  It even shows the correct duration (i.e. 14 seconds)
8.  When I drag that subclip onto the timeline it drags the entire length of the parent clip, without in or out points (not just the 14 second subclip).
9.  I undo and decide to go back through the original clips again; mark ins and outs and simply drop to the timeline (either Insert or Overwrite).
So in the end, I'm using sections of the Merged clip, but I'm not using Subclips of the Merged clips (because that doesn't work).
Now, what's happening, though I didn't know it when I recorded the video above, is that Premiere is crashing any time I select both "regular" footage and "merged" footage.
So, two bugs here:
1. Can't use Subclips that are derived from Merged clips in ANY timeline.  Once dragged to the timeline it expands to the full duration of the original clip.
2. Can't select both "regular" and "merged" clips at the same time on the timeline.
JStrawn (staff) was kind enough to offer to take a look at some small sample files.  But my interview clips are very long, and I'm concerned that if I export them, to make them shorter, they may not actually exibit the problems I'm having on the original clips.
Anyone else using this type of "Merge Clip" workflow that could reproduce either the subclip-from-merged-clip bug or the mixed-selection crash given the steps above?