Hi,
I just installed (followed the tutorial) SilverStripe, and I'm unable to view my site, not the CMS...
I have Apache and MySql installed before I installed SilverStripe... but it shouldn't affect it...

when I open the CMS I get this error:

FATAL ERROR: Invalid argument supplied for foreach()
At line 327 in C:\Program Files\SilverStripe\htdocs\sapphire\core\model\Database.php

Database->manipulate()
line 92 of DB.php

DB::manipulate()
line 567 of DataObject.php

DataObject->write(1)
line 50 of PageView.php

PageView->record()
line 171 of Statistics.php

Statistics::collect()
line 75 of ContentController.php

ContentController->init()
line 12 of Page.php

Page_Controller->init()
line 244 of Security.php

Security->login(Array)
line 210 of Controller.php

Controller->run(Array)
line 76 of Director.php

Director::direct(/Security/login)
line 104 of main.php

Context

--------------------------------------------------------------------------------

Debug (Debug::showError() in line 149 of Debug.php)
manipulation =

When I open my site I get this error:

FATAL ERROR: DataObject::buildSQL: Can't find data classes (classes linked to tables) for SiteTree
At line 1334 in C:\Program Files\SilverStripe\htdocs\sapphire\core\model\DataObject.php

user_error(DataObject::buildSQL: Can't find data classes (classes linked to tables) for SiteTree,256)
line 1334 of DataObject.php

DataObject->buildSQL(HomepageForDomain = 'localhost:3000')
line 1543 of DataObject.php

DataObject->instance_get_one(HomepageForDomain = 'localhost:3000',)
line 1504 of DataObject.php

DataObject::get_one(SiteTree,HomepageForDomain = 'localhost:3000')
line 32 of RootURLController.php

RootURLController::get_homepage_urlsegment()
line 15 of RootURLController.php

RootURLController->run(Array)
line 76 of Director.php

Director::direct(/)
line 104 of main.php

Context

--------------------------------------------------------------------------------

Debug (Debug::showError() in line 149 of Debug.php)
filter =
HomepageForDomain = 'localhost:3000'
sort =
Sort
limit =

join =

restrictClasses =
1
having =

tableClasses =

Thanks
Gil Amran

1) Check that mysite/_config.php exists.
2) Visit http://yoursite.com/db/build?flush=1 and see if it returns any errors.

If db/build?flush=1 runs without error, try visiting the site or CMS again - that may have fixed it.