If you have new winrar and the password "devil" without the "" still fails even when typed in manually, what error do you have? There are 3 types of error messages you can have:
1) you have CRC error
2) unzipping failed even though you used the password
3) the file is corrupt and cannot be unzipped,
When you get any of these 3 errors if you have new winrar and used the password, it means your internet cocked up and your download is incomplete. Because of that, you will have to download again.
Let me explain. I keep stressing to people to check file. Pretend the file you want is 100mb, your internet somehow cocks up and it says download is complete but the file you have is 60mb or any number less than 100mb. That means, your computer's connection died halfway and it tells you download has completed when that is not true. This means you have an incomplete file. When you try to do anything with a file that is incomplete, you will fail and be told you have errors.
I have had people tell me both online and real life that it is pointless to check file size because the computer says their file has completed download.
Do not trust your computer. Always check file size. Before you download from sendspace or any website, you will be told how big the file is.
Write down that number.
When download is complete, check the file size of the file you now have. If it is not the same as the number you wrote down, your internet and computer cocked up and lied.