DVJ, You're the second person who's mentioned about memory errors with the paints. I think it's down to the fact that both VC and External art all default to 32-Bit files, which are significantly larger in memory use than DXT5 compressed art. (65Mb per 4096 tile in 32-Bit, compared to 16Mb for 4096 tile in DXT5)
As part of the general release installer which we're currently putting together, we'll add some DXT5 paints to the optimizer folder which will allow users to customise their experience and hopefully minimize any memory issues.
As for the engine shutoff, that's a new one for us. check that both front and rear cockpit starter and ignition switches are OFF, as well as the fuel cutoff paddle being pulled. It might be that the rear switches are in the on position even if the front seat are turned off.
As for the fuel tanks, I tried again this morning and it all seemed fine here.