Computers Suck

So ive been working on my montage for the past few months when i get spare time. Now everytime i open the project back up it crashes Vegas I dont have any previous saves or anything so i have to start over and pray that it doesnt happen again. Im really losing my patience with montages being that it takes me a while to get all the clips together, i can never make my mind up for a tune (or tunes to use) then I put it together watch it then go back and make a whole mess load of changes. This goes on for a while and i get tired of doing it so I just throw it together at the end just to be done with it lol. So im not sure what to do now do i start over and possibly be done or just throw all the clips together with music in the background with no audio synching and make it an old school tage. Or risk crashing again and waste another 4 months of work lol. I know alot of you are not big fans of montages but i enjoy  them cause I like the final product but almost hate the process of getting there. Ah whatever i just wanted to vent