Hello,
I encountered an error while downloading files over https,
the solution for this is simple.
At this at the last line of 'program/include/session.inc':
session_cache_limiter('private');
That solved my problem.
PD: The Content-Length is still missing ofcourse, but you can download files now over HTTPS, or should I say, I can download files over HTTPS NOW :(
Xceet