Can't export from FCPX!! (error -1)

I know this is going to sound crazy...but this was happening to me over and over again. My solution was to not use the internet (Chrome) while exporting my master. It seems that every time I had Chrome or YouTube open the export would fail with error -1

Seriously weird.

Not weird at all. These days there's so much video on the web that browsers are accessing the same resources as video applications. Background rendering and processing is all well and good in theory, but no professional will use the same machine while the computer is processing or encoding files. It's one thing to use the computer while it's copying files, but it's a whole other can of worms to use it while it's using both the GPU and the CPU to process complex calculations.

this video saved my life 500GB of, editing

https://appleid.apple.com/cgi-bin/WebObjects/MyAppleId.woa/99/wo/IL0ygtOhUVRwSbx Dc4H1uM/0.0.69.17.5

Same as others, switching the export from H.264 to ProRes 422 HQ worked, period. We got the .mov we wanted. We're not asking too many questions.

Cheers

Thanks. I followed what baronCDale wrote, and it worked for me.

This is what worked for me:

When the export failed I clicked details and it gives me a frame number (1635)

I switch the Preferences setting for the timecode window in the middle bar to display in frames and I got to that frame number.

This clip and/or therender for the clip is corrupt.

Right click the clip "Reveal in Browser," then right click that in event browser and select "reveal in finder."

I opened with MPEG stream clip and converted it to a new .mov clip and replaced the clip. Make sure to get rid of the old one.

Quit FCPX, reopen and now you should be able to render and export.

Best of luck!

God Bless You. It worked!

baronCDale's suggestions worked. Yes!