Can’t use admincp after fresh install

[Gulliver]

Hi, I would like to use this script; this is what I’ve done to make it work:

1) After installation, I had the “smarty class” error. I’ve fixed it following these instructions: http://www.mysidiaadoptables.com/for...ead.php?t=4763
(My path structure is different > “members/mysite/”)
2) Then, I had this problem: http://www.mysidiaadoptables.com/for...ead.php?t=4845 (except for the “MAMP” thing part, I don’t even know what it is XD)
I’ve fixed it adding “RewriteBase /” in .htaccess file
3) Now the user front-end site works fine (You can login and do everything), but the admincp still doesn’t work.

This is what shows up:

Fatal error: require() [function.require]: Failed opening required '../inc/config.php' (include_path='.:') in /members/mysite/classes/class_initializer.php on line 97

If I go directly to “admincp/index.php” (instead of “admincp” only), I see the panel (while all other admincp pages still give the same error) and I can login. However, If I do the latter action, this message shows up:

Fatal error: Uncaught exception 'LanguageException' with message 'Language var default does not exist.' in /members/mysite/classes/class_language.php:68 Stack trace: #0 /members/mysite/admincp/view/admincpview.php(18): Language->__get('default') #1 /members/mysite/classes/class_frontcontroller.php(100): AdminCPView->index() #2 /members/mysite/admincp/index.php(109): FrontController->render() #3 /members/mysite/admincp/index.php(113): AdminCP::main() #4 {main} thrown in /members/mysite/classes/class_language.php on line 68

And it shows up in all admincp pages (as long as the “login session” lasts).

Can you help me solve this problem? =)

I hope everything is clear… my English isn’t so bad… is it? XD