I have a similar error message it is as follows:
Warning: upgrade_backup_db(c:\program files\easyphp1-8\www\moodle/backup/version.php): failed to open stream: No such file or directory in c:\program files\easyphp1-8\www\moodle\backup\lib.php on line 339
Fatal error: upgrade_backup_db(): Failed opening required 'c:\program files\easyphp1-8\www\moodle/backup/version.php' (include_path='.;C:/Program Files/EasyPHP1-8\php\pear\') in c:\program files\easyphp1-8\www\moodle\backup\lib.php on line 339
Not the same on line error, but it has stopped my installation.
Any suggestion greatly appreciated. I attache my config.php for information.
Regards
Rosswell