Upload Test Script

output on failing machine

array(1) {
  ["gameimage"]=>
  array(1) {
    ["name"]=>
    string(10) "simple.pdf"
  }
}

<hr><form name="upload-image-form" enctype="multipart/form-data" method="post">
<input type="file" name="gameimage" size="30" />
<input type="submit" value="Submit" />
</form>

output on working machines

array(1) {
  ["gameimage"]=>
  array(5) {
    ["name"]=>
    string(10) "simple.pdf"
    ["type"]=>
    string(15) "application/pdf"
    ["tmp_name"]=>
    string(14) "/tmp/phpmJ0EkJ"
    ["error"]=>
    int(0)
    ["size"]=>
    int(60911)
  }
}
<hr><form name="upload-image-form" enctype="multipart/form-data" method="post">
<input type="file" name="gameimage" size="30" />
<input type="submit" value="Submit" />
</form>

test.php

<?php
var_dump($_FILES);
?><hr><form name="upload-image-form" enctype="multipart/form-data" method="post">
<input type="file" name="gameimage" size="30" />
<input type="submit" value="Submit" />
</form>