[ic] Secure server - we're sorry, the Interchange server is unavailable...

[Peter N.]

Greetings all,

I just set up a 5.2 Foundation catalog.  Everything works fine, except 
when I set SECURE_ENABLE to 1 in variable.txt, I can no longer checkout. 
As soon as I try to hit the catalog via https, I get the "server is 
unavailable" error.

The regular (non-IC) pages on the site work fine via http and https, and 
the catalog works fine via http. I've verified that permissions are 
identical to all of my other IC 5.2 catalogs (755, owned by catalog 
user, using suexec), and and I don't see anything relevant in the apache 
or IC log files.

What's my next step in troubleshooting this?

Thanks in advance.

Peter