I have two web applications on the same server:

[url]http://localhost/ModemUpgrade[/url]

and

[url]http://localhost/TestFormAuth[/url]

The web.config of ModemUpgrade:

<authentication mode="Forms">
<forms name=".cuid"
loginUrl="http://localhost/TestFormAuth/MemberLogin.aspx" path="/">
</forms>
</authentication>

PROBLEM:
when I call FormsAuthentication.RedirectFromLoginPage from
MemberLogin.asp,

I notice that ReturnUrl=/ModemUpgrade/Agree.aspx
This keeps me on [url]http://localhost/TestFormAuth/MemberLogin.aspx[/url]
because it doesn't have the fully qualified url
([url]http://localhost/TestFormAuth/MemberLogin.aspx?ReturnUrl=http://localhost/ModemUpgrade/Agree.aspx[/url])
needed to complete the redirect

If I manually surf to:
[url]http://localhost/TestFormAuth/MemberLogin.aspx?ReturnUrl=http://localhost/ModemUpgrade/Agree.aspx[/url]

the whole thing works...Please advise. Thanks.