Are you saying that the Actor X plugins posted on the UT developers website ... Only cover the Full versions of Maya and not the PLE version?
That's my understanding, yes.
The issue here is that the standard ActorX plugins produce output, I think in the form of .psk & .psa files. This is a bad thing from Alias's perspective when talking about PLE because it means you could use PLE to generate output that could then be used in a regular work pipeline, and that's in direct competition with full Maya. Basically, Alias would be giving away a fairly powerful tool and would lose serious amounts of cash because the people who
can afford the real tool would have no incentive to buy it.
The plugin for PLE exports directly into UnrealEd, and will start up UnrealEd if you don't already have it running. Then the only way you can save your work and use it in a game is as a .ukx, which can't be imported into some other tool and converted to a different format. The Alias revenue stream is pretty well protected. Can't say I blame them.
Unfortunately for us, all this means no custom ragdolls via Maya PLE because KAT works on .psk(a?) files.