afrochops,
405 means that you are posting data to a file that has not been declared as executable in Abyss Web Server (executable files should be in Script Paths).
Can you please send to
support@aprelium.com your abyss.conf, log/cgi.log, log/access.log, and makecert.pl files? Please compress them in a Zip or RAR package.
Do not forget also to add a reference to this forum message.