As a quick test of 2.3 I tried switching to the Mooney Acclaim.  Shortly after loading I get a CTD.  The older Mooney loaded ok.

 

 

Odd, the acclaim loaded up just fine for me.  However, I did a complete clean install of P3D2.3 and not an update from 2.2

Loads up fine here as well, and I didn't make a clean install, only patched.

bic,

 

Is there a chance you edited the Mooney, adding any gauges or making changes that may not be compatible with v2.3?

As a quick test of 2.3 I tried switching to the Mooney Acclaim.  Shortly after loading I get a CTD.  The older Mooney loaded ok.

Did you start from the Sim Director window or did you load the Mooney after starting a flight with a different aircraft?

I made no change to the panel.

 

I was still on ground when I loaded it, shortly after it started up.I used the Vehicle menu to select it.

Try editing these lines in Prepar3d.cfg to the following:

 

[USERINTERFACE]
...
SITUATION=


[STARTUP]
...
LOAD_SIMDIRECTOR=0

Now start P3d and you will go directly to the default flight with the default aircraft. Pause and select the Mooney. See if that makes a difference. If it doesn't, you should go to the LM Prepar3d message board and report a bug. I noticed on previous updates of P3d, that sometimes when you switch to a new aircraft not using the default flight, it causes all kinds of problems.