All thumbnails in browser & timeline are missing and FCPX quits

Question

Level 2

176 points

All thumbnails in browser & timeline are missing and FCPX quits

All my thumbnails have disappeared in the browser and on the timeline inc. waveforms. If I mouse over a clip the thumb appears. If I switch background rendering on nothing happens... no rendering. When I choose quit, FCPX stalls for a minute and it tells me it is stopping background rendering. FCPX then crashes and I get a quit error window.

Editing still works and appears normal except I have no thumbnail images or waveforms. Any ideas anyone?

I am running up to date versions on a new Mac Pro.

Mac Pro, Mac OS X (10.6.2)

Posted on Jul 29, 2014 3:27 PM

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Answer 1

Tom Wolsky

Level 10

151,179 points

Jul 29, 2014 4:56 PM in response to Jon Braeley

TTry dumping your cache files and letting the application rebuild them.

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Answer 2

Jon Braeley Author

Level 2

176 points

Aug 8, 2014 12:49 PM in response to Tom Wolsky

Thanks but I tried this before posting. I deleted render files...cache... preferences etc.

Also when I quit I get the message "cancelling background tasks" even though I have no background tasks running or rendering. FCPX then hangs forcing restart.

On restart some thumbnails reappear - about 50%.

I am thinking this may be a memory shortage. I only have 16Gb in a new 8-core Mac Pro. However this really does not explain why thumbnails keep disappearing.

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Answer 3

Mar 17, 2015 4:30 AM in response to Jon Braeley

Same exact issue.

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Answer 4

Mar 17, 2015 4:39 AM in response to Tom Wolsky

Problem still persists after "dumping cache" (ie, deleting generated event files) -- !

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Answer 5

Mar 17, 2015 5:05 AM in response to James Hall5

ACTUALLY!!! After "dumping cache" (ie, deleting generated event files) -- the thumbs are now appearing on the storyline.... but fcp still stall and then crashes on quit with same "cancelling bg tasks" mssg.

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Answer 6

Mar 26, 2015 10:03 PM in response to Jon Braeley

I have the same problem. Did you find a fix to this? Thank you!

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Answer 7

isakmo

Level 1

0 points

Jan 8, 2016 11:06 AM in response to Jon Braeley

Sorry for bumping an old thread...

I have exactly the same problem! No thumbnails, and "cancelling background tasks" when trying to quit the application! Help would really be appreciated.

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