FSUIPC4938c is now required due to the SimConnect changes in the mid-January 2015 auto update to FSX. Without this fsuipc update it will not work failing to detect the new SimConnect.

 

http://forum.simflight.com/topic/66139-updated-modules/

 

Without this RC will start  but you will not see the menu and if you examine fsuipc.log in the modules folder you will see it could not find SimConnect.

 

After the Steam-FSX update and the FSUIPC4 update, RC worked as expected with the displayed menu. I worked the first menu for weather and clearance and it checked out.

new fsuipc has been out for a while