VirtualBox import error Cannot register the DVD image

Open the .VBOX file in any text editor of your choice.
find the following lines:

[...]
<DVDImages>
        <Image uuid="{b058bc48-c451-4cff-9db0-d01c70e99c28}"
location="/usr/share/virtualbox/VBoxGuestAdditions.iso"/>

[...]

Delete all entries between and section. After deleting the contents, your .VBOX file will look like below.

<DVDImages>
</DVDImages>

Save and close the file.

That’s it. Now, you can load the virtual machine without any issues.

I solved it by open the file win 7 64.vbox with text editor and remove the tag:

<DVDImages>
   <Image uuid="{fd686a98-c1a6-42d9-82aa-67728b524d53}" location="C:/Program Files/Oracle/VirtualBox/VBoxGuestAdditions.iso"/>
</DVDImages>

Know that by removing the tag it will be added as empty tag. and reopent the vm of virtual box again. and it worked