Why are customizations using SSL not working on my upgrade site?
Secure Sockets Layer (SSL) Certificates, All product versions
If a customization uses SSL certificates located in a site's '/bin/dll' directory they will not be copied over to an upgrade site. Further, the '/bin/dll' directory location is not accessible by customers, and therefore placing certificate files for such uses in this directory is not recommended.
Instead, certificates should rather be located in the site's '/cgi-bin/[site name].db/certs/' directory. For further details please see