Apex 4.2 (Medina) runs well using the Classic UI setting. The only function that shows any limitation is the failure of automatic transfer into ClickFORMS. I have only tested the integration with ClickFORMS. It may work in other programs. Of course manual transfer of the information works fine. The Medina UI has exhibited some erratic behavior and I don't advise using it at this time.
Apex 3.2 installs and runs fine too, but likewise has fails to automatically transfer the sketch and data.