Ubuntu 12.04.3 i386 desktop failed to install on VBox 4.2.16

[johnbrown]

I am getting this error when I try to install Ubuntu desktop virtual machine:


Failed to open the CD/DVD image C:\Users\SQLAdministrator\Downloads\ubuntu-12.04.3-desktop-i386.iso.

Could not get the storage format of the medium 'C:\Users\SQLAdministrator\Downloads\ubuntu-12.04.3-desktop-i386.iso' (VERR_NOT_SUPPORTED).

Result Code: VBOX_E_IPRT_ERROR (0x80BB0005)
Component: Medium
Interface: IMedium {29989373-b111-4654-8493-2e1176cba890}
Callee: IVirtualBox {3b2f08eb-b810-4715-bee0-bb06b9880ad2}
Callee RC: VBOX_E_OBJECT_NOT_FOUND (0x80BB0001)

[Perryg]

Usually a corrupt download. Check the md5sum.