[CentOS] Calibre installation fails on C7

Attempting to install latest Calibre on Centos-7, getting:

2015-12-22 21:32:38 URL:https://raw.githubusercontent.com/kovidgoyal/calibre/master/setup/linux-installer.py [25887/25887] -> "-" [1]
Installing to /home/fredex/calibre-bin/calibre
Downloading tarball signature securely...
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "<string>", line 670, in main
  File "<string>", line 655, in run_installer
  File "<string>", line 627, in download_and_extract
  File "<string>", line 619, in get_tarball_info
  File "<string>", line 578, in get_https_resource_securely
  File "<string>", line 487, in __init__
  File "/usr/lib64/python2.7/httplib.py", line 1182, in __init__
    context.load_cert_chain(cert_file, key_file)
ssl.SSLError: [SSL] PEM lib (_ssl.c:2757)


Can anybody advise me what this tells me? (other than SOMETHING wrong
with some certificate...)

Thanks!

-- 
---- Fred Smith -- fredex at fcshome.stoneham.ma.us -----------------------------
  "For him who is able to keep you from falling and to present you before his 
 glorious presence without fault and with great joy--to the only God our Savior
 be glory, majesty, power and authority, through Jesus Christ our Lord, before
                     all ages, now and forevermore! Amen."
----------------------------- Jude 1:24,25 (niv) -----------------------------