Errors while installing

I’m trying to install the developper demo.

I could “solve” the first error by following this topic: http://www.orocrm.com/forums/topic/errors-while-downloading-and-trying-install

However after typing thee command: php app/console oro:install –env=prod
I have the following error. I hope someone can help.

PHP Warning: require(/var/www/orocommerce-application/app/cache/prod/doctrine/orm/Proxies/__CG__OroBundleOrganizationBundleEntityBusinessUnit.php): failed to open stream: No such file or directory in /var/www/orocommerce-application/vendor/doctrine/common/lib/Doctrine/Common/Proxy/AbstractProxyFactory.php on line 209

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PHP Warning:  require(/var/www/orocommerce-application/app/cache/prod/doctrine/orm/Proxies/__CG__OroBundleOrganizationBundleEntityBusinessUnit.php): failed to open stream: No such file or directory in /var/www/orocommerce-application/vendor/doctrine/common/lib/Doctrine/Common/Proxy/AbstractProxyFactory.php on line 209

Topic

[Roman GrebenchukMember]

Hi,
Please run composer again and before installation remove cache/prod folder

[Author]

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