Looks like the Mac version is defunct. Crashes under 10.7.3 with the following: Process: tsMuxerGUI [1819] Path: /Applications/tsMuxerGUI.app/Contents/MacOS/tsMuxerGUI Identifier: com.yourcompany.tsMuxerGUI Version: ??? (???) Code Type: X86 (Native) Parent Process: launchd [166] Date/Time: 2012-02-04 15:02:30.140 -0800 OS Version: Mac OS X 10.7.3 (11D50) Report Version: 9 Interval Since Last Report: 39920 sec Crashes Since Last Report: 2 Per-App Crashes Since Last Report: 2 Anonymous UUID: 20288645-D2BF-42CB-AEBF-EDED6F546EC9 Crashed Thread: Unknown Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Backtrace not available Unknown thread crashed with X86 Thread State (32-bit): eax: 0x00000000 ebx: 0x007641a8 ecx: 0xbffff06c edx: 0x903549c6 edi: 0xad2042c0 esi: 0x00000006 ebp: 0xbffff088 esp: 0xbffff06c ss: 0x00000023 efl: 0x00000246 eip: 0x903549c6 cs: 0x0000000b ds: 0x00000023 es: 0x00000023 fs: 0x00000000 gs: 0x0000000f cr2: 0x06bef000 Logical CPU: 0 Binary images description not available External Modification Summary: Calls made by other processes targeting this process: task_for_pid: 2 thread_create: 0 thread_set_state: 0 Calls made by this process: task_for_pid: 0 thread_create: 0 thread_set_state: 0 Calls made by all processes on this machine: task_for_pid: 3661 thread_create: 0 thread_set_state: 0