Every time I render my new video Sony Vegas crashes and says, Sony Vegas has stopped working.
Happends every time.
Whatever I do with the video.
I can render aother videos but not this one.

Re-install it.

Same thing happened to me but with GIMP.

I re-installed it and it worked.

I don't think that'll work.
All my effects that I used in the video will be gone because almost all of them are plugins.
+ Gimp and Sony Vegas isn't really the same thing.
And as I said, I can render other movies perfectly.

Windows Movie Maker kept crashing. But I EVENTUALLY was able to finish the vid. GEEZ, it takes long for them to process, ESPECIALLY if it's 10 mins long....UGH!

While in After Effects you can optimize rendering settings/RAM usage.

Yes, its been a long since I used Vegas, try going to Options, rendering etc.

Or else, find a solution on zeh google.

You could try this:
- list all plugins used in video
- pack them
- add to the pack video project
- send it to someone and see if he's able to render
- if not, one of the plugin is probably broken