I downloaded and installed the Kali 64-bit .ova version on my VB (using MacOS), but had issues with resolution and instead of fixing it there I just deleted the box and rm'd the folder.
When I went to reinstall the same ova file I started getting this error - NS_ERROR_INVALID_ARG (0x80070057). I've read online that this is possibly a generic error that deals with a lack of storage space, but my machine currently has 133GB of free space.

I've also just tried installing the 32-bit version of that .ova and it was successfully imported.