Freaky stuff with remoting

OK, I got my remoting after all :) My comport can be accessed from another computer in my network at home now.
There was one small problem: When I started the client and connected to the server and accessed the remote object I got this error:

Exception: Can't find Client assembly or one of it's depencies

Well, Client was the program name here and he did run just fine when I started it. Suddenly it says it couldn't find itself :confused:
Anyone can tell me what that might be ?

After I made another project just to reproduce the problem it didn't show up anymore. Very very weird !!!