Cure:

This error can be corrected by using the Validator's text editor to change the line with the error from:

<meta name="ncc:totalElapsedTime" content="00:08:53" />

to:

<meta name="ncc:totalElapsedTime" content="00:08:51.442" />

Then save the edited file.

Note: The same process can be applied to any reported timing errors.