In addition to the above, you should have all the following images (+MD5) inside the backup file:
.android_secure.img
boot.img
cache.img
data.img
datadata.img
recovery.img
system.img
nandroid.md5
Since you can't boot, you would ideally check this using a USB card reader or SD slot on a laptop. If you don't have either of the above, you can ditch the battery, replace and go into hboot. Access recovery there and then mount SD via CWM while connected to computer with USB cable to check your contents.
If everything checks out ok and mulitple restore efforts fail, only think I can think of would be to try loading an earlier version of CWM which is getting to be a lot of work...
May just be easiest to reload your Rom and set it back up, especially if you have Titanium or similar to bring your apps/data back. Then you can interrogate the failed backup with a fully operating phone if you are the inquisitive type and get rid of it if there was a noticeable issue.