SOLVED - Having trouble setting up virtualbox/Xubuntu for the first time

I am following the instructions on how to set up your virtual machine and everything has downloaded and i just finished the step where i set processors to 2, but now I am on the storage step and it is not working. i go into storage and select the “Choose virtual optical disk file” and i choose the Xubuntu 18.40 file they had me download earlier and i get an error “Failed to open the disk image file C:\Users\Owner\Downloads\xubuntu-18.04.3-desktop-amd64.iso. The medium ‘C:\Users\Owner\Downloads\xubuntu-18.04.3-desktop-amd64.iso’ can’t be used as the requested device type. Result Code: E_FAIL (0x80004005)
Component: MediumWrap Interface: IMedium {ad47ad09-787b-44ab-b343-a082a3f2dfb1} Callee: IVirtualBox {d0a0163f-e254-4e5b-a1f2-011cf991c38d} Callee RC: VBOX_E_OBJECT_NOT_FOUND (0x80BB0001)” .

If anyone has a solution that would be great because i have not skipped a step in the install instructions and i have no clue why this is happening.

Have a look at the answer here and see if you can apply it to your issue. Sounds like you first need to create the virtual space.

Yep i figured it out from that page, thank you.