The only suggestion I can throw, without some testing, is to check the
values for ViewState and ViewStateMac, as ViewState is where the values
should be handled.

--
Gregory A. Beamer
MVP; MCP: +I, SE, SD, DBA
Author: ADO.NET and XML: ASP.NET on the Edge

************************************************** **************************
****
Think Outside the Box!
************************************************** **************************
****
"Gary Varga" <MSNG@VargaLtd.freeserve.co.uk> wrote in message
news:0b8701c351dc$8ddd6e60$a401280a@phx.gbl...
> I have an ASP.NET application that is working under v1.0
> of the framework but is not working under v1.1.
>
> The application uses logical addresses to map to
> physical addresses of the pages in the application (e.g.
> [url]http://www.blah.com/App/DoYourStuff.page[/url] refers to
> [url]http://www.blah.com/App/DoYourStuff.aspx[/url]).
>
> There is an HTTPModule that looks up the physical address
> from the logical address and calls Server.Transfer
> (<physical address>, True).
>
> This used to work fine with postbacks but now calls the
> page as if it was the first time it was requested.
>
> The nearest I can get to finding something similar online
> is the change in default when you do not provide the
> preserveForm parameter. Here I do, I have always
> specified the choice explicitly.
>
> I have even tried to reverse the preserveForm values but,
> unsurprisingly, to no effect.
>
> Many thanks,
> Gaz