If you recorded an XDF file with our software and the processing tool you're using is giving you an error when trying to open the file, this could be due to an older software version. With newer releases of the software, this bug was fixed.
Always make sure to use the most up to date software!
For the files you already recorded, most common issue is an invalid footer i.e. the file didn't close well. This can often be fixed, but please contact us for further instructions at support@mbraintrain.com