share operation Export failed when creating frame (error -1)

The share operation Export File has failed

The operation could not be completed because an error occurred when creating frame 44274 (error -1).
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happened twice, at 45% into a 27 minute long timeline. Should I trash render files, and re-render [and how do I do that] or ?? I did use coremelt's 'load & lock' on a clip & hmm just about where it fails.

To trash the render files, in the project library, highlight the project and then from the FILE menu above choose "Delete Project Render files". You will be presented with an option to delete "Unused" files or "All" files. Select "All".

Repeat the procedure for your event render files. Select the event or events associated with your project one at a time, and then again from the FILE menu above choose "Delete Event Render Files". Same options, select "All".

Reopen your project and try to re-render if needed. You can also omit rendering and just Share to export a master file. FCPX will automatically render prior to sharing.

If this doesn't help, consider trashing preferences and restarting FCPX.

The latest version of FCPX 10.0.8 is supposed to work now with Core Melt products, and I believe Lock and Load as a part of that.

found the problem at about the 24 minute mark I used a clip d/l'ed from YouTube that had a fps of 30.303 I loaded that clip into its own timeline where upon X said it didn't recognize its properties, I put in 29.97 as its fps. exported it out and them imported it back to replace the weird fps clip. Problem resolved.