by Timmo » Sat Apr 05, 2008 8:55 am
The main sim cfg file will be rebuilt if its deleted so try making a copy of that somewhere else (as back up) and then deleting it and restarting the sim- See if that cures the problem. If so, go back to your copy and look for any obvious differences in the part relating to effects.
An change to your aircraft cfg is most a possible answer but I would have thought this wouldnt have been changed by the installation of addon aircraft.
The other thing to check is that the fx files havent been renamed or deleted- looking at the aircraft.cfg for the beaver, it references two effect files for touching on the water: fx_wake and fx_spray so check you have these in the Effects folder.