What can be passed to the -vm parameter is currently restricted to 253 characters (maximum length of a ShortString minus the characters vm), thus it will end up with an invalid message index somewhere amidst the 71xx messages. So use multiple -vm parameters to work around this. (Edit: I have fixed this now in the development version)
Please note that it's a bad idea to simply silence such a bunch of messages, cause they're there for a reason and you should instead deal with the reason.