Answers:
What version of Premiere Pro? Include the minor version number (e.g., Premiere Pro CS5.5 with the 5.5.2 update).
Premiere Pro CC totally up to date
Have you installed the recent updates?
yes
What operating system?
What version of Premiere Pro? Include the minor version number (e.g., Premiere Pro CS5.5 with the 5.5.2 update).
Have you installed the recent updates? (If not, you should. They fix a lot of problems.)
What operating system? This should include specific minor version numbers, like "Mac OSX v10.6.8"---not just "Mac".
Refurbished 27-inch iMac 3.4GHz quad-core Intel Core i7
What kind(s) of source footage? When telling about your source footage, tell us about the codecs, not just the container types. For example,
source footage is variable but most was shot with canon 60d
File Path: /Volumes/Silvaines thunderbolt/dan_stanleypark/demo_dan/project/Adobe Premiere Pro Preview Files/Demo_dan.PRV/Rendered - edda89f6-7b7b-46b0-af47-ffa2ca2e9156.mpeg
Type: MPEG Movie
File Size: 60.0 MB
Image Size: 1280 x 720
Frame Rate: 29.97
Total Duration: 00:00:36:10
Pixel Aspect Ratio: 1.0
"H.264 in a .mov container", not just "QuickTime".
If you are getting error message(s), what is the full text of the error message(s)? no error messages
What were you doing when the problem occurred?
playing clips
Has this ever worked before?
yes, this is just starting to happen now - have been editing these clips for weeks
What other software are you running?
try not to run anything else
Do you have any third-party effects or codecs installed?
? I just downloaded LOGIC PRO … could that have an effect?
Tell us about your computer hardware. Be especially certain to tell us about third-party I/O hardware (e.g., AJA, Matrox, Blackmagic, MOTU).
Processor 3.4 GHz Intel Core i7
Memory 8 GB 1600 MHz DDR3
Startup disk Mackintosh HD
using a Lacie external hard drive for footage with thunderbolt connection
Are you using Mercury Playback Engine GPU Acceleration?
I don't know
Does the problem only happen with your final output, with previews, or both?
happens while viewing/previewing during edits - don't know if it will export OK
Screenshots and sample movies are often very useful in showing exactly what you're seeing, and can thus make getting an answer faster and easier.
This is a dynamic problem - could Skype screen share?
Also, please do everyone a favor and check the Premiere Pro FAQ list and also do a quick Premiere Pro Community Help search to see if your question has been addressed already.
This should include specific minor version numbers, like "Mac OSX v10.6.8"---not just "Mac".
What kind(s) of source footage? When telling about your source footage, tell us about the codecs, not just the container types. For example, "H.264 in a .mov container", not just "QuickTime".
If you are getting error message(s), what is the full text of the error message(s)?
What were you doing when the problem occurred?
Has this ever worked before?
What other software are you running?
Do you have any third-party effects or codecs installed?
Tell us about your computer hardware. Be especially certain to tell us about third-party I/O hardware (e.g., AJA, Matrox, Blackmagic, MOTU).
Are you using Mercury Playback Engine GPU Acceleration?
Does the problem only happen with your final output, with previews, or both?
Screenshots and sample movies are often very useful in showing exactly what you're seeing, and can thus make getting an answer faster and easier.
Also, please do everyone a favor and check the Premiere Pro FAQ list and also do a quick Premiere Pro Community Help search to see if your question has been addressed already.