Tech Tool Deluxe: Failed Volume Structure!

When I ran tech tool deluxe I passed everything except for my Volume structure. I just got my mac book and have only loaded songs on it. How could my volume structure fail this test? I have file vault enabled, could that have something to do with it? When I disabled file vault it could only check my "mac hd" and not the volume w/my name on it. My macbook works great, i have no idea.
Thanks guys,
-Greg P
P.S. The repair option didn't work either :-(

Run OSX Disc Utility and have it check the drive. If the drive passes, I wouldn't worry about it.

thanks man, i ran it on the toshiba hd, so it would get all the volumes. it passed, i think its just tech tool being stupid. I tried to update it, and it said it's server is down. yea i'ts been like that for 1 week. who knows...thanks man i appreciate the help.