redgar

Sorry to hear that Michael, saving and loading in the MadDog works perfectly for me. In the Load Manager application I have the Panel state option to "DO NOT CHANGE". Maybe that would cause trouble if it is set to something else.

Count me among those that really want save and restores! I don't often get 3 or 4 uninterrupted hours, much as I'd like to. The Leonardo MD80 also works. Last time I tried there were a few bugs (maybe the fuel quantity?), need to try again with the latest build.

I was having a similar issue, rather then locking up mine would just install the selected livery and erase the old one from the aircraft.cfg. Go into Windows explorer, browse to FSX\SimObjects\Airplanes\PMDG 737-800NGX WL , right click on the aircraft.cfg AND aircraft.cfg_old ( if it exists ), go to properties, uncheck the box "read-only", click "apply", then "OK". Go back to the Livery Manager ( if you Windows Vista or 7 right click on your icon and select "run as administrator" ). Select the version you want to install the liveries for in the left hand box and click the "Select liveries to install" button. Select all of the liveries for that aircraft variant and click the Open button. Do NOT select liveries from a different variant! I only had the issue on the 800 WL, all others installed OK. My particular issue was not solved by removing the read-only flag from aircraft.cfg, I had to remove it from aircraft.cfg_old as well. Note you may have to remove the read-only flag from aircraft.cfg_old every time you run the Livery Manager