I just read your question again and I saw that you are already copy it. Forget my comments.

Do you have something in the compilation output about that DLL?


>Does the "Copy local" property on the reference is set to True?
>
>
>>I have a 2.0 winforms project that has my utility class library added as a reference. In my utility class library, I have 2 external .dlls added as references with Copy Local set to true. One is a 2.0 .dll and the other is a 1.1.
>>
>>When I compile my winforms project, the 2.0 .dll gets copied as expected to the runtime folder, but the 1.1 .dll does not. Does anybody know why?