CentOS 7 503 Service Unavailable

I have been unable to resolve this problem, but I suspect it is an apache
configuration error since my mono web application works fine when I use
XSP4.

I have installed and tested this same web app on multiple other Linux
distributions without any problems, but it does not seem to work on CentOS
7.

I installed mono from the xamarin repositories using the following commands:
    rpm --import
"http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF"
    yum-config-manager --add-repo
http://download.mono-project.com/repo/centos/
    yum install mono-complete
    yum install apache2-mod_mono
    yum install mono-basic


That all worked fine, and when I go to my install directory (/usr/Exago) and
run XSP4, I can open my browser and connect to localhost:9000 and everything
looks fine and functions as I would expect, however, attempting to connect
through Apache leads to the 503 Service Unavailable error, and the apache
log simply says, "Failed to connect to mod-mono-server after several
attempts to spawn the process."

I originally generated this application conf file from
http://go-mono.com/config-mod-mono/Default.aspx with slight modifications
(added <Directory> for access, added MonoUnixUmask)


conf file:
============================================================

<Directory /usr/Exago>
  AllowOverride None
  Require all granted
</Directory>

Alias /Exago "/usr/Exago"
MonoServerPath Exago "/usr/bin/mod-mono-server4"
MonoUnixUmask Exago 027
MonoApplications Exago "/Exago:/usr/Exago"

<Location "/Exago">
  MonoSetServerAlias Exago
  SetHandler mono
  Require all granted
  SetOutputFilter DEFLATE
</Location>

<IfModule mod_deflate.c>
  AddOutputFilterByType DEFLATE text/html text/plain text/xml
text/javascript
</IfModule>

============================================================




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