Created attachment 80143 [details]
Screen shot of error dialog.
Go to Finder
Select 2 or more files
Open files (cmd-O or File->Open)
LibreOffice says that the files don't exist. It appears that LibreOffice may be concatenating the file names into one string and is trying to open multiple files as a single file. The included screen shot shows an example of this - the phrase 'does not exist' is only added after the last file.
Operating System: Mac OS X
*** This bug has been marked as a duplicate of bug 54264 ***