After spending four hours trying to upgrade my sidewinder to have two beam lasers I must have earned over 15000 unfortunately every time I upgraded the hard point and launched the game crashes loosing me my money and the laser. I save the game prior to upgrading but after each crash I am left without any money and no option to load the old save with the money prior to trying to upgrade.. I look at everyone with new Cobras with envy as I am afraid to upgrade in case I loose all my money and get no ship....is there a way to load a previous save game?