Hello,
I faced a problem with error code 4 after playing with diskcryptor.
Case 1: Typo during input your password
Here
https://github.com/dpaukov/combinatoricslib3-example
For example No 8 you can print all possible values in the log. Then you can try to find the correct one. In my case, I know the password character and I can add all possible typos. It was a simple 5 number password of 5 character length and 3 numbers in it used.
Case 2: I have no idea what to do...