security issue openwebif new vix 4.2

hi when i upgraded to 4.2 and re done all the settings on the box (vu duo 2) the openwebif doesnt work when i enable http auth. the user name and pass i enter are the same as that i use for FTP etc so it cant be a user or pass problem. openwebif works perfectly fine with no http auth but i have my reciever set up for remote viewing so this is a security issue for me as bascially i have no security enabled. anybody else experiencing this problem or know the issue??