ARV and Maya render view doesn't work correctly when running IPR with Xgen light linking.

[tearcandy]

ARV and Maya render view doesn't work correctly when running IPR with the Xgen light linking.

Is it bug?

I tried break the light link with the Xgen but not working in IPR render.

Does anybody has solution?

ps. Version 4 of Arnold ; mtoa 1.4.2.1