Preprocessor directives must appear as the first non-whitespace character on a line

Dodgy error from the compiler....

"Preprocessor directives must appear as the first non-whitespace character on a line"

What this actually meant was I'd tried to use two DataBinding expressions inside the same property -

                <asp:Label ID="UserName" runat="server" Text='<%# Eval("UserName") %><%# Eval("TeamMemberNameText") %>'></asp:Label>

To solve it I just pulled it down to:

                <asp:Label ID="UserName" runat="server" Text='<%# Eval("UserAndTeamMemberNameText") %>'></asp:Label>