If the RestrictedPassword for the RestrictedUsername and the AddPassword for the AddUsername contains the ? character the sending of the nzb using the XML-RPC implementation will hand with an error. I had to remove both this character from the password configuration for NZBGet to get it work properly.
I don't know if there is other issue with other special character. I can reproduce this issue and copy paster logs for both of this issues if needed (do not have the same exception once you fix each one password).
If the RestrictedPassword for the RestrictedUsername and the AddPassword for the AddUsername contains the ? character the sending of the nzb using the XML-RPC implementation will hand with an error. I had to remove both this character from the password configuration for NZBGet to get it work properly. I don't know if there is other issue with other special character. I can reproduce this issue and copy paster logs for both of this issues if needed (do not have the same exception once you fix each one password).