You helped me a few years back with this same website. A few recent updates to software and things are not working entirely right.
using Version 2.0.4 of WordPress HTTPS.
Along with Shopp 1.2.1
When WordPress HTTPS is deactivated, the page I want to load, does indeed load, but with with the following "caution" being issued by the browser:
Your connection to http://www.thesymphony.org is encrypted with 256-bit encryption. However, this page includes other resources which are not secure. These resources can be viewed by others while in transit, and can be modified by an attacker to change the behavior of the page.
The connection uses TLS 1.0.
The connection is encrypted using AES_256_CBC, with SHA1 for message authentication and DHE_RSA as the key exchange mechanism.
The connection is compressed with DEFLATE.
When the plugin is activated the checkout page results in a redirect loop.
How can I resolve?
Let me know if you have any questions.