[web2py] 500 Internal Server Error under CentOS Apache and Web2py 2.9.5

[lucas]

hello everyone,

i just upgraded from web2py 2.4.6 to 2.9.5.  i am running centos 6.5 with 
apache httpd server 2.2.15 and mod_wsgi is 3.2.3.

i have no applications installed yet, just trying to get the default 
welcome, examples, and admin interfaces working.  apache returns, "500 
Internal Server Error".  not sure where to start to fix the error.

here is my /etc/httpd/conf.d/wsgi.conf file:
BOF...
LoadModule wsgi_module modules/mod_wsgi.so
WSGIDaemonProcess web2py user=apache group=apache
WSGIApplicationGroup %{GLOBAL}
WSGIProcessGroup web2py
WSGISocketPrefix run/wsgi
WSGIScriptAlias / /opt/web-apps/web2py_2.9.5/handlers/wsgihandler.py
...EOF

here is my /etc/httpd/conf.d/default.conf file:
BOF...
NameVirtualHost *:80
NameVirtualHost *:443

<VirtualHost *:443>
  SSLEngine on
  SSLCertificateFile /etc/httpd/ssl/self_signed.cert
  SSLCertificateKeyFile /etc/httpd/ssl/self_signed.key

  <Directory /opt/web-apps/web2py>
    AllowOverride None
    Order Allow,Deny
    Deny from all
    <Files wsgihandler.py>
      Allow from all
    </Files>
  </Directory>

  AliasMatch ^/([^/]+)/static/(?:_[\d]+.[\d]+.[\d]+/)?(.*) 
/opt/web-apps/web2py/applications/$1/static/$2

  <Directory /opt/web-apps/web2py/applications/*/static>
    Options -Indexes
    ExpiresActive On
    ExpiresDefault "access plus 1 hour"
    Order Allow,Deny
    Allow from all
  </Directory>

  CustomLog /var/log/httpd/access_log common
  ErrorLog /var/log/httpd/error_log
</VirtualHost>
...EOF

here is my /etc/httpd/conf.d/welcome.conf file:
BOF...
<LocationMatch "^/+$">
    Options -Indexes
    ErrorDocument 403 /error/noindex.html
</LocationMatch>
...EOF

thanx for your help in advance, lucas

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