After installing SP1 I see the following strange effect (that I don’t think I had previously): after selecting a (PMDG-)panel state (e.g. CLDDRK) to load on the 3D FMS, the panel state loads, but the FMS continues to show "Loading panel state..." and is unresponsive to further input. It is necessary to pop the FMS out and back in before it shows the normal top menu, and is responsive to key presses.

Check this link http://forum.avsim.net/topic/352190-quick-read-on-a-few-items/page__view__findpost__p__2147483Another way to get it back is to click on the CDU screen to bring up the 2D CDU then close it and it will start working again.