Error to run the update for Malwarebyte

Hello all,
I used to run the update for Malwarebyte regularly without fail. While I am in the process of updating I got stuck up with an error message. So again I tried after some time, thinking some magic will happen but no luck. How will I update my antivirus? Please help me before anything attacks my computer. Thanks.

An error has occurred. Please report this issue to our support team (include the content of all error message(s) and code(s) in your submission).
PROGRAM_ERROR_UPDATING (0, 0, I/O error)
