Im working on an ip office 406 running 4.1(12). I have the tftp server ip, time server ip, and lisence server ip address all of them are correct. I am getting a error saying an invalid mask has been specified, format should be a series of 1's followed by 0's. Why would that be. My customer has access to manager but he has been changing things and having issues cause of it so now i gave him limited access. Does any one know why it is giving this error.