HCL and php/mysql newbie, here.

Uploaded hcl 2.1.5 as instructed and changed permissions.

Went to access the /setup/ folder, and get this response:

Warning: Includer::include_once(/home/ultramed/public_html/aqbeta/helpcenter/class/../class/smarty/Smarty.class.php) [function.Includer-include-once]: failed to open stream: No such file or directory in /home/ultramed/public_html/aqbeta/helpcenter/class/include.php on line 445

Warning: Includer::include_once() [function.include]: Failed opening '/home/ultramed/public_html/aqbeta/helpcenter/class/../class/smarty/Smarty.class.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/ultramed/public_html/aqbeta/helpcenter/class/include.php on line 445

Fatal error: Class 'Smarty' not found in /home/ultramed/public_html/aqbeta/helpcenter/class/template.php on line 29

(Tried accessing this from both IE 7.0.5730.11 and Firefox 2.0.0.12)
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Running the debug.php file, I get this:

0777
0777
0777
0777

ICONS Directory:
index.php   readable Writable executable   0777
offline.gif   readable Writable executable   0777
online.gif   readable Writable executable   0777
End of ICONS
Version: 2.1.5

(I had changed the permissions on the files within the Icons directory).

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I am installing into a subdomain of my main website. 

Server stats:
Apache version 2.2.8 (Unix)
PHP version 5.2.5
MySQL version 5.0.45-community-log
Architecture x86_64
Operating system Linux

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Any help would be appreciated.
Thanks!!

Thanks for the suggestion.

I have checked my server and Safe mode is not on, and the configuration is set appropriately.

Any other ideas?