Actually I'd really like to know what doesn't function correctly (by using editor 5.4 with M080). I would prefer to have the latest software, but it requires justification to purchase/upgrade and without the technical detail that becomes more difficult.
It isn't necessarily a user setup issue, PTC comes out with updates that aren't necessarily in lockstep. One may be covered under the support/ license and one is a 'new' version that requires purchase. Makes it hard to execute technically.