It seems that there are problems with gcc 3.0 binaries on some systems. I am very sorry if this bug happen in you system. I will release a new version compiled with gcc 2.96 soon. It will have input plugins and will be released for all the OSes. There are also some bugs when the emulator searches the plugins that will be solved in this new version (With the 0.0.3 version it should be run in a xterm in the mupen64's directory).