Web User Control Problem

[Uriah Piddle]

Hi Gang,

I have two web forms that contain the same custom web user control. In the
user control is the drop down list box: 'ddlDownloadCategories'. When I load
one web form all is well but when I load another I get this error:

System.InvalidOperationException: Could not find control
'ddlDownloadCategories' in ControlParameter 'downloadCategoryID'.

'downloadCategoryID' is an ObjectDataSource parameter. The code in both of
the web forms is the same and, of course, the code in the user control is
the same. The query strings are the same. I can't figure this one out.

Thanks for any ideas.

Steve