1. You must have vcenter web client to "move to" another host aka DAS to DAS vmotion/svmotion! The exe client is stuck on 5.0 and is missing all the good features.
2. you have to setup vmotion on the switch
3. the vswitch has to be the same.
4. the cpu's have to be the same (or setup EVC ahead of time which is a big downer! Reason why you keep all servers on the same chip level).
5. Any mounted dvd must be available on both sides (aka unmount any dvd/iso first!)
Post the error after you review my tips and tell me what happens.
If you can't afford the higher end license, you will need to use ghetto-vmotion which is suspend the vm, then "MIGRATE" it to another host, then un-suspend it (veeam supports this, and you can powerscript it) but it causes massive downtime and perhaps clock skew.