Database query error | upgrade.php

I installed 6.0

I didn't add any mods or anything, I was planning to update it before tinkering with the template. After replacing all of the files I tried to run the upgrade.php and I get this error:

Database query error

But I only get that error. No other information on the page.

When trying to just go to my website I get this error:

Warning: main(/home/singledp/public_html/inc/classes/BxDolPagination.php) [function.main]: failed to open stream: No such file or directory in /home/singledp/public_html/inc/classes/BxDolClassifieds.php on line 21

Fatal error: main() [function.require]: Failed opening required '/home/singledp/public_html/inc/classes/BxDolPagination.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/singledp/public_html/inc/classes/BxDolClassifieds.php on line 21

I didn't expect the website to function yet as I haven't run the upgrade.php script. Hopefully this all helps.

It was working just fine before the upgrade attempt. Also, if there anyway i can just update the database or locations manually and bypass w.e the script cant seem to do. Thank you.

Edit: Now I get this error

Warning: main(header.inc.php) [function.main]: failed to open stream: No such file or directory in /home/singledp/public_html/db.inc.php on line 21

Fatal error: main() [function.require]: Failed opening required 'header.inc.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/singledp/public_html/db.inc.php on line 21

I really hope someone can help me sort this all out. :-)

Also, line 21 says

require_once("header.inc.php");

Hello!

First of all - Dolphin 6 hasn't file BxDolPagination.php and file BxDolClassifieds.php doesn't contain such requring.

Plz specify how did you get your current package?

Regard

I downloaded 6.0 from the dolphin website it was working just fine.

I went here for upgrade instructions:

http://www.boonex.com/trac/dolphin/wiki/DolUpgrade

And clicked the 6.0 to 6.1 and followed the instructions here:

http://www.boonex.com/trac/dolphin/wiki/6.0to6.0.0001

Where I downloaded the adfree version (because there is a license) and followed through with replacing everything. And when I attempted to run the install.php script i got a database error. And then, not sure if something was moved, I got the second error I posted.

Edit: Zip file i used to install the first 6.0 was Dolphin-v.6.0.0005-AdFree

Next Edit: I am hoping I don't need to reinstall, but if there is an easy way to do so let me know please. Maybe some file replacement, I dont know.

First of all - need to use upgrade from ur current version to next step. As i can see u had 6.0.0005, so why then did u try to "downgrade" ur site to 6.0.0001 version? Seems that's why u've got ur errors. Well if u met DB error - then better to restore backup of DB and try to upgrade one more time more correctly - from 6.0.0005 to 6.1.000, 0001 etc.