For .Net 1.0/1.1 , you need a config file for remoting server
If you don’t have a <ServerEXE>.config
file, create one and have this in it:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.runtime.remoting>
<customErrors mode="off" />
</system.runtime.remoting>
</configuration>
For .Net 2.0, you can use RemotingConfiguration.CustomErrorsMode property