XML is the format that your postal address information is in, so theres no * or - or + or any symbol things in your postal info? I dont know what else then lol, have to ask mike that one.
I do believe this is all set now. It had to do with a setting in USPS shipping from RC-Monster.com's checkout process (as I'm sure some of you guessed by the error).
Please make sure you let mike@rc-monster.com know if you have any ordering troubles.
Joe
Electronics run on smoke... if you let the smoke out, they stop working.
It seems USPS made some changes on their end which caused a problem with the way the store was sending the info. This problem has been corrected and you should be able to place your order.