An item on a webform fails to open the next form on a particular client

I have a form which is initiated through a shortcut.  When the form opens it allows the user to choose the area of the company to go into (ie: billing, GL, Fleet OPS, Routing, etc.) . Once selected the form opens another form allowing the client to enter Username and password for verification into the area of choice.  On one particulatr client, when the form downloads the choice of Billing just seems to have no connection to the next set of forms for user verification.  No one else seems to have this problem and can get to the next screen.  All