Error While Installing Extension Pack Oracle VM VirtualBox Extension

Error
Result Code: 
NS_ERROR_FAILURE (0x80004005)
Component: 
ExtPackManager
Interface: 
IExtPackManager {3295e6ce-b051-47b2-9514-2c588bfe7554}

The above error can be avoided by command line installation :-

Code:

VBoxManage extpack install --replace  <filename>

VBoxManage extpack install --replace Oracle_VM_VirtualBox_Extension_Pack-4.1.26-84997.vbox-extpack