#25 The namespace `ByteFX.Data' can not be found

[BitEagle]

I have included a *.cs file into an *.aspx file via

<%@language="c#" src="/portal/Mono/user.cs"
AutoEventWireup="false"
inherits="User.Registration"%>
.

The included user.cs file contains "using
ByteFX.Data;" and when i try to compile the *.aspx
file, I get the following error message:

Error
message: /var/www/portal/portal/Mono/user.cs(9,0) :
error CS0246: The namespace `ByteFX.Data' can not be
found (missing assembly reference?)

When I compile just a *.cs file with monodevelop
using ByteFX.Data it works fine.

I am very desperate because I spend a lot of time
trying to figure out, how it works. ;(

Btw I am using xsp@Debian to compile *.aspx files. My
xsp version is 1.0.0 but also 1.1.4 reports the same
error. My ByteFX.Data version is 0.76.

Any suggestions?