I added the plugin and followed the instructions for

I added the plugin and followed the instructions for setting it up. When I went to one of my sites http://new.signaturesouthflorida.com and added a place as I went to publish the new place I got this error:

Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator and inform them of the time the error occurred, and the actions you performed just before this error.
More information about this error may be available in the server error log.

Apache Server at idx.signaturerealestatecompanies.com Port 80

What I am looking to accomplish is a custom post type for places in Florida where there are fun things to do. To have a list and groupings. Each place would have a icon, a web page, phone number, address and description. See the attached pdf for a printed version of this.

Any help in getting this done would be greatly appreciated.