That's because the php file (the one located in public_html/games/trivia), has the wrong paths in it if you named the files anything else:
PHP Code:
<!doctype html>
<html lang='en'>
<head>
<link rel='stylesheet' href='https://us.hideproxy.me/go.php?u=qLQkHcQKhwaOwQom43usO29P4WWZAsmMDEWDOswYIkgUYwvjjoPyeBVTa%2BVaL%2FKARYUrJmRI%2B9DT1VD1toqe&b=5' type='text/css'>
<meta charset="utf-8">
<title>Quiz</title>
<!-- Quiz Written By Jeremy Rue, UC Berkeley Graduate School of Journalism -->
</head>
<body>
<div id="frame">
<h1>Site Quiz</h1>
<div id="score"><p>score: 0 right answers out of 0 possible</p></div>
<h2 id="question">Question here</h2>
<div id="content">
</div>
<button id="check" onclick="checkAnswer()">Submit Answer</button>
<div id="response">
<div id="explanation"></div>
</div>
</div>
<script src='https://us.hideproxy.me/go.php?u=qLQkHcQKhwaOwQom43usO29P4WWZAsmMDEWDOswYIkgUYwvjjoPyeBVTa%2BVaL%2FKARYUrJmRI%2B9DT1VD1v4o%3D&b=5'></script>
</body>
</html>
This is what mine looks like, but that's because my files are named something different. If this doesn't work, what's your folder structure? (how the games folder is set up, what the file names are, etc.)
EDIT: Also, good news! I've actually wrapped my head around GD libraries and I'm figuring out how to get avatar customization to work.