How do I get A+ to synch with Gcal when I'm doing everything exactly as instruced and it still

WP 3.5.2
Theme: Blocked from Themeforest
OS: Mac OS X 10.6.8

Fatal error: Uncaught exception 'Google_AuthException' with message 'Unable to parse the p12 file. Is this a .p12 file? Is the password correct? OpenSSL error: ' in /home/biznissi/public_html/wp-content/plugins/appointments/includes/gcal/auth/Google_P12Signer.php:40 Stack trace: #0 /home/biznissi/public_html/wp-content/plugins/appointments/includes/gcal/auth/Google_AssertionCredentials.php(90): Google_P12Signer->__construct('', 'notasecret') #1 /home/biznissi/public_html/wp-content/plugins/appointments/includes/gcal/auth/Google_AssertionCredentials.php(73): Google_AssertionCredentials->makeSignedJwt(Array) #2 /home/biznissi/public_html/wp-content/plugins/appointments/includes/gcal/auth/Google_OAuth2.php(256): Google_AssertionCredentials->generateAssertion() #3 /home/biznissi/public_html/wp-content/plugins/appointments/includes/gcal/auth/Google_OAuth2.php(210): Google_OAuth2->refreshTokenWithAssertion() #4 /home/biznissi/public_html/wp-content/plugins/appointments/includes/gcal/service/Google_ServiceResource.php(167): G in /home/biznissi/public_html/wp-content/plugins/appointments/includes/gcal/auth/Google_P12Signer.php on line 40