Errors when importing threads into the bug tracker as issues

Found errors in header when importing threads (with attachments) into the bug tracker as issues:

Warning: copy([path]/attachment/4/4/0/0/4532.attach) [function.copy]: failed to open stream: No such file or directory in [path]/includes/class_ptimporter.php on line 414

Warning: filesize() [function.filesize]: stat failed for [path]/attachment/ptimporter_temp/4532.import in [path]/includes/class_ptimporter.php on line 438

Warning: fopen([path]/attachment/ptimporter_temp/4532.import) [function.fopen]: failed to open stream: No such file or directory in [path]/includes/class_image.php on line 333

And

vBulletin message:

mageinfo Failed:

[PitchouneN64ngc]

The importer can't find the original file. Not a Project Tools bug.

Please fix your attachments (if requested files exists in your FTP) and retry.