Me. I'm just getting to know Spring.Net, and many questions are waiting for me. The first one has been solved. This is an error. When I try to start the example of Mobile Finder, "Cannot create OBJ folder" is displayed. This problem may only be related to "windows vista" system. In vista system, even if you log in with administrator rights, the folders under C:\program folder do not have full rights. I have to right-click C:\Program Files\Spring. NET 1.3.0\examples\' and then select Properties and Security to allow my login account to have Full Control permissions on this folder. Then the problem is solved.