overdubn, the error message appears to have given you everything you need to know to fix the problem.
Geeklog tries to load the file mysql.class.php from the path specified in $_CONF['path_system'] by default this is generated from $_CONF['path'] with system appended.
Your install is trying to include /glog/system/databases/mysql.class.php, this indicates that you have your path set to:
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$_CONF['path'] = '/glog/';
Now, as you are likely to be on shared hosting, I highly doubt that glog is actually in the root folder as that path indicates.
The actual error message says where the problem occurred:
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No such file or directory in /home/content/d/c/i/dcidigital/html/glog/system/lib-database.php on line 117
Which means you should have your path set as follows in config.php
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$_CONF['path'] = '/home/content/d/c/i/dcidigital/html/glog/';
Then geeklog will correctly set the path to the other *_path entries in $_CONF if you have not explicitly altered those settings.