error in extration of movie

I am getting following error when I extract movie after applying password. My password is correct & part is also fully downloaded & names of all the parts are also same

Answer #1
the seems to be corrupted
try repairing the archive
Answer #2
thats not nessiseraly due to a corrupt archive, its caused by winrar being unable to access the file. i would try rebooting a couple of times, see if that fixes things up, or move the files to another hard drive/pen drive