WBB 4.0.4 Instalationsfehler

Fatal error: PHP warning in file /var/customers/webs/ni117440_2/lib/system/package/plugin/ScriptPackageInstallationPlugin.class.php (69): include(/var/customers/webs/ni117440_2/acp/install.php): failed to open stream: No such file or directory

Information:id: 1860b144b44bdde59f921241d4a2302f89e82edc
error message: PHP warning in file /var/customers/webs/ni117440_2/lib/system/package/PackageInstallationDispatcher.class.php (702): file_exists(): open_basedir restriction in effect. File(/var/customers/webs/ni11744/wcf/global.php) is not within the allowed path(s): (/var/customers/webs/ni117440_2/:/var/customers/tmp/ni117440_2/:/usr/share/php/:/usr/share/php5/:/tmp/)
error code: 0
file: /var/customers/webs/ni117440_2/lib/system/WCF.class.php (303)
php version: 5.3.22
wcf version: 2.0.4 (Maelstrom)
date: Thu, 03 Apr 2014 12:36:40 +0000
request: /acp/index.php/InstallPackage/?&
referer: project-ons.de/acp/index.php?&action=WCFSetup

Stacktrace:#0 [internal function]: wcf\system\WCF::handleError(2, 'file_exists(): ...', '/var/customers/...', 702, Array)
#1 /var/customers/webs/ni117440_2/lib/system/package/PackageInstallationDispatcher.class.php(702): file_exists('/var/customers/...')
#2 /var/customers/webs/ni117440_2/lib/system/package/PackageInstallationDispatcher.class.php(410): wcf\system\package\PackageInstallationDispatcher->promptPackageDir()
#3 /var/customers/webs/ni117440_2/lib/system/package/PackageInstallationDispatcher.class.php(136): wcf\system\package\PackageInstallationDispatcher->installPackage(Array)
#4 /var/customers/webs/ni117440_2/lib/acp/action/InstallPackageAction.class.php(72): wcf\system\package\PackageInstallationDispatcher->install('75767cdb')
#5 /var/customers/webs/ni117440_2/lib/action/AbstractDialogAction.class.php(70): wcf\acp\action\InstallPackageAction->stepInstall()
#6 /var/customers/webs/ni117440_2/lib/action/AbstractAction.class.php(49): wcf\action\AbstractDialogAction->execute()
#7 /var/customers/webs/ni117440_2/lib/system/request/Request.class.php(58): wcf\action\AbstractAction->__run()
#8 /var/customers/webs/ni117440_2/lib/system/request/RequestHandler.class.php(108): wcf\system\request\Request->execute()
#9 /var/customers/webs/ni117440_2/acp/index.php(10): wcf\system\request\RequestHandler->handle('wcf', true)
#10 {main}