AC has released an updated NVmax v4.00.40 If you previously downloaded .40 and found it corrupt.

Here's what AC is saying.

NVmax 4.00.40 is now available for public download. This is the first release ever where there are no known or reported issues. If you previously downloaded .40 and found it corrupt please re-download.

This version has been tested with success on GeForce 4 Ti and MX products.

Download NVmax v4.00.40 Local download