"The share operation Master File has failed"

"The operation could not be completed because an error occurred when creating frame 30682 (error -1)"

I try to make a Master File of a 45 minute HD Film. FCPX is giving me a headache with this message (repeatedly) after about 21% render.

Specs (I know, it's not the newest / fastest piece):
FCPX 10.0.8
iMac OS X Lion 10.7.5
Processor 2.66 Inter Core Duo
8 GB Mhz DDR3
NVIDIA GeForce 9400 256 (!) MB

Settings
Apple ProRes 422
Resolution 1920 x 1080 (25fps)
Quicktime movie (Lineair PCM)
'Open' and 'roles as' QT

Hope you guys can help.

Peter

Switch off background rendering. Trash your project render files. Don't re-render. Export. If that fails come back.

Thanks Tom, solved!

Peter

Hi,

I've tried deleting all render files and exporting without re-rendering, but it stops at 20%. How more I can do to solve the problem? Thanks

SPECS
FCPX 10.0.9
iMac OS X Lion 10.8.5
Processor 2.7 Intel Core i5
8 GB 1600 Mhz DDR3
NVIDIA GeForce GT 640M 512 MB

SETTINGS
Apple ProRes 422
Resolution 1920 x 1080 (25fps)
Quicktime movie

Change in 'Preferences' TIME DISPLAY
to FRAMES
Find in your timeline de frame which is causing the problem
Try to render this part to solve the problem

Thank You very much I had same problem and I solved with it. I detect the frame in the message and I deleted. Now is working.

Eduardo

I had this same problem happen on a project the other day. Everything was fine, then I tried to key frame some scaling and it just started flickering black frames. I quit FCPX used event manager x to open a new project, closed FCPX and reopened my project with the errors and problem was fixed. Weird.