[otrs] OTRS package installation error

I try to install OTRS::ITSM but i am behind proxy. I tried to install by downloading the packages. When i click on the button continue on the installation i get the error: Need File/Package! But i already installed the dependencies. I try to intall ITSMTicket and already have installed the following packages: - GeneralCatalog 1.0.4 - LinkObject 1.0.4 - ITSMCore 1.0.4 - ITSMService 1.0.4 Sorry for my poor english... Thanks... -- DJ ROGER Abalando as estruturas www.bsbblack.com