I tried all sorts of thing. I changed permissions on /tmp directory, I activated and deactivated the firewall and nothing. I'm getting the same error message. Maybe because I also have other Wine applications in my system? I have WinOnX and also some Windows games wrapped as executables around Wine to make them work under OSX.

P.S. I opened Console and read the logs. Seems that WineskinX11 is crashing. If you need the crash logs I can sendyou.