I am trying to install SilverStripe 2.4.7 for the first time in my localhost,
but it gave me the following errors:

Warning: Unexpected character in input: ''' (ASCII=39) state=1 in C:\AppServ\www\SilverStripe\sapphire\core\ManifestBuilder.php(245) : eval()'d code on line 1

Notice: Use of undefined constant mysite - assumed 'mysite' in C:\AppServ\www\SilverStripe\sapphire\core\ManifestBuilder.php(245) : eval()'d code on line 1

Warning: SS_Report::register(): 'SideReport_EmptyPages' is not a subclass of SS_Report in C:\AppServ\www\SilverStripe\cms\code\Report.php on line 301

Warning: SS_Report::register(): 'SideReport_RecentlyEdited' is not a subclass of SS_Report in C:\AppServ\www\SilverStripe\cms\code\Report.php on line 301

Warning: SS_Report::register(): 'SideReport_ToDo' is not a subclass of SS_Report in C:\AppServ\www\SilverStripe\cms\code\Report.php on line 301
Building database schema...

Fatal error: Class 'DatabaseAdmin' not found in C:\AppServ\www\SilverStripe\install.php on line 1090

and the install hange, I tried to enter the site, a similar fatal occured inside it but with Email class