James Carrick
Dear Thinkad
The issue is with being unable to read the asset r5, if you can attach the FCPXML we can tell you where it is so you can manually check it. Essentially the XML is referencing media that is outside of the physical asset. Options are to either remove the asset from the XML (we can do this for you if you want), or replace r5 with another piece of media.
Yours Sincerely
James.