为什么IpcChannel告诉我，“无法打开匿名级安全令牌？”

I have a pretty simple client-server app that I am using to separate two components that can't live together in the same process. When developing them (the server is an exe, the client is a library), all my unit tests are happy as pigs in manure. When I move on to re-using the library elsewhere, I get the following exception:I have a pretty simple client-server app that I