On my servers, the unlock_tables() error did not show up on the pages themselves, however, I was able to find it in the server logs. This allowed me to isolate the error.
You can either download the latest version and replace it, or just add this line right after the <?php tag in the vbridge.php file:
Code:
define('NOSHUTDOWNFUNC', true);
I am curious if this might have affected some installations if this error message was sent before any cookie info was shot to the browser.