as it my other post, this is 2.7.0 (can't try SVN)
When I hit the debug button, quite often, the debuggee fails to run :
I'm not sure where it gets /dev/?? from, but this seems obviously wrongStarting debugger : gdb --tty=/dev/?? --interpreter=mi "./wxMupen64Plus.app/Contents/MacOS/wxMupen64Plus"
...
DEBUG>>&"/dev/??: No such file or directory.\n"