а вот на сервере у меня ошибонька
[root@server SOFT]# VBoxManage extpack install Oracle_VM_VirtualBox_Extension_Pack-5.0.12-104815.vbox-extpack
WARNING: The vboxdrv kernel module is not loaded. Either there is no module
available for the current kernel (3.14.41-std-def-alt1) or it failed to
load. Please recompile the kernel module and install it by
sudo /sbin/rcvboxdrv setup
You will not be able to start VMs until this problem is fixed.
0%...
Progress state: NS_ERROR_FAILURE
VBoxManage: error: Failed to install "/home/share/obmen/SOFT/Oracle_VM_VirtualBox_Extension_Pack-5.0.12-104815.vbox-extpack"
VBoxManage: error: Extension pack 'Oracle VM VirtualBox Extension Pack' is already installed. In case of a reinstallation, please uninstall it first
VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component ExtPackManagerWrap, interface IExtPackManager
VBoxManage: error: Context: "RTEXITCODE handleExtPack(HandlerArg*)" at line 1158 of file VBoxManageMisc.cpp