This script will test your web browser to see if it can read a cookie needed by the CAPTCHA. You should see a message below letting you know if cookies are properly enabled in your browser.
Note: If you see any errors or warnings at the top of the pageTest Passed: Cookies are enabled on your browser.
If the CAPTCHA is giving you a session error, this rules out your web browser as the cause.
Solution: Try all 3 tests below. If all 3 pass and the WordPress forms do not work properly, the problem could be another WordPress plugin is conflicting. Look on the Admin - Plugins - menu. Temporarily Disable (not uninstall) all your other plugins. Do your WordPress forms work now? If yes, Activate the plugins one by one to determine which one conflicts. Notify that plugin author of the conflict.
Try the PHP Requirements Test
Try the Cookie Test again
Try the CAPTCHA Test
PHP Scripts and WordPress plugins by Mike Challis
Free PHP Scripts
, even small amounts are appreciated
Contact Mike Challis for support: (Mike Challis)