I get an error like "Packed data CRC failed in volume name. The volume is corrupt"!
This message may be displayed together with the message "CRC failed in file name. The file is corrupt" and may help to detect exactly which volume is corrupt. If a big file is split between a few volumes and only one volume has been damaged after archive creation.
Depending on corrupt archive details, RAR may display or skip this message. The message "CRC failed in file name. The file is corrupt" is always displayed if the file data are damaged.
Check to see if you have installed the recent version. If not, please download the actual WinRAR/RAR version here.
http://www.win-rar.com/index.php?aid=download