Upgrading from v2.4.0

I have had d20Pro for a while and being inherently loathe to read manuals I flew by the seat of my pants.

I was thrilled with the potential of some items, but got frustrated with others. So we ditched it for a while.

I am now trying again. I have version 2.4.0 and have gone through all the tutorials etc that I can find. I now would like to ensure I work with the latest version lest I frustrate myself needlessly.

I will add this to the feature request section too, but an Upgrade button would be AWESOME! Barring that, I am at a complete loss as to how to upgrade. I have blown most of the day and am crying out for help.

Thanks.