HI, I'm hoping someone can shed some light on this.
This was a site that I had to manually upload certain folders as they seemed to be missing when I did the original install with simple scripts.
everything has been working fine until I decided I wanted to install something that I know works: Travis Spacer Package. Here is the message:
This is when I got to Dashboard>Blocks
(the blocks view does not come up - just this message)

Fatal error: Cannot redeclare class TravisnSpacerPackage in /home/shell123/public_html/concrete/blocks/travisn_spacer/controller.php on line 25

the interesting thing is - it seems to be missing the closing tag for the php..

?>

but that's how it is on my other site and another one I installed for someone else. And it works fine - one is still 5.4.2 and the other is completely updated.

I'm a php newbie and I'm somewhat functional in html and css, so I need pretty directional instructions so please don't assume I know anything important -- many, many thanks!

here is the code from the php controller file for this block:

<?php

defined('C5_EXECUTE') or die(_("Access Denied."));

class TravisnSpacerPackage extends Package {

protected $pkgHandle = 'travisn_spacer';
protected $appVersionRequired = '5.2.0';
protected $pkgVersion = '1.3';

public function getPackageDescription() {
return t("Add spacers to your webpage without editing code.");
}

public function getPackageName() {
return t("tnSpacer");
}

public function install() {
$pkg = parent::install();
// install block
BlockType::installBlockTypeFromPackage('travisn_spacer', $pkg);
}

}