Attempting to run facebook_authorization.php and received the following error:

Notice: Undefined offset: 1 in C:\Inetpub\shopping.imagineighborhoods.com\facebook_authorization.php on line 956

Fatal error: Uncaught CurlException: 60: SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed thrown in C:\Inetpub\shopping.imagineighborhoods.com\facebook_authorization.php on line 599

I got to the facebook login page ok, logged in, clicked the "Allow" button, then received this error. I'm on zen-cart v1.3.9f, fresh install of AutoFacebook 2.0, PHP 5.2 build 3790, with:
- CURL (libcurl/7.14.0 OpenSSL/0.9.8a zlib/1.2.3 )
- gd2 (bundled (2.0.28 compatible) )
- JSON 1.2.1
- MySQL 5.0.22

My platform is Windows Server 2003, IIS6.

Any help would be appreciated.