Noel Jones
Hi, It just so happens I’ve been running some tests related to “Cannot Open Any Bookmark For [file:// etc” issue and have found that if a Project references Proxy Media, the Proxy Media needs to be available and accessible to X2Por5 for it to successfully process the FCPXML. If the Proxy Files have been removed/deleted they can be regenerated from ‘File > Transcode Media’. Once the transcode has finished, the FCPXML will need to be re-exported again before putting it through X2Pro5.
Can you try this to see if it helps please.
Note: I have brought this up with our developers to investigate further.