need help with config file

I took your code and it works fine!!!

Attached are the files I used in three separate assemblies; ServerSide, Library and Client respectively.

Below is the ServerSide config.

Code:

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<?xml version="1.0" encoding="utf-8" ?>
<configuration>
        <system.runtime.remoting>
                <application>
                        <channels>
                                <channel name="channel1" ref="tcp" port="8085"></channel>
                        </channels>
                        <service>
                                <wellknown mode="Singleton" type="ServerSide.TasksManagement, ServerSide" objectUri="TaskManagement.rem" />
                        </service>
                </application>
        </system.runtime.remoting>
</configuration>

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well..after i created a new project and deal with RegServer it worked!!
so thanks a lot for the help :)