if u follow the check list in the part 3 of the manual under normal procedures the messages should go away, or u could just hit cancel button

yes, the EICAS is showing all the things u need to adress, if u go thru the check list and put out all the lights on the over head panel then they should go away.  the IRS alignment, yaw dampers HYD packs ELEC..all these are on the overhead panel, u need to go thru them with the check list.  hope that helps

I did load a different Livery PW and there is no problem, it's with the RR model in mine computer. Herb
Correction:
The problem was: Loading a default plane first. End this flight and start with Free Flight, Select CS757-200 and do the alignment first. OH panel. Set all other switches to the proper settings. No more Rat, Yaw Damper or HYD problems. Herb