Error on opening Project files from SX3 into Cubase 6.5

When I try to open SX3 files into 6.5, some of them will not work. They will load or sometimes not even load all the way and then i’ll get an error and have to close cubase. Also when I try to save the files in cubase 6.5 it will say I can’t because they are corrupted. Anyone know what’s wrong? This sucks but i’ll at least be able to import the files into a new project. It’ll just be a pain and take a while.

Oh, how I love people who say, “and then i’ll get an error.”

And then they say, “Anyone know what’s wrong?”

Guys, my car is making a funny sound. Anyone know what’s wrong?