Hi,
Using W3 Total Cache and reCapture in Gravity Forms causes problems submitting forms. (W3 Total Cache goes into a infinite loop)

We can eliminate the problem with a change to the file wp-content/plugins/w3-total-cache/ConfigDbStorage.php .

Line 498 in ConfigDbStorage.php is now:

while ( false !== $row ) {

Can you change it to:

while ( false !== $row && $row !== null ) {

The condition does not handle if the $row is null, witch it is. The condition will never change from null to false.

Thanks,
Andy Romanofsky
All Around Creative