Having a VMWare ESXi server at home has made it incredibly helpful to find deployable OVA appliances for testing and tweaking. It’s very common to find OVAs that are made in VirtualBox. I don’t fault people for this, but it seems that neither VMWare nor Oracle want to blink with respect to making OVAs interoperate without throwing errors. In my attempt to get a test rollout of LogicalDoc, I came across this very problem. I was thus incredibly happy to find this little tutorial that is excellent and effective.
http://www.itsecurenet.com/virtualbox-ova-to-vsphere-ovf/
Thanks, whoever wrote that!!