It doesn't even start - crashes right away.
I can upload a whole crash log if it helps.
Process: attract [786]
Path: /Applications/MAME/Attract.app/Contents/MacOS/./attract
Identifier: org.attractmode.attract
Version: 1.5.3 (1.5.3.67)
Code Type: X86-64 (Native)
Parent Process: bash [784]
Responsible: bash [784]
User ID: 501
Date/Time: 2015-09-18 17:04:23.923 +0200
OS Version: Mac OS X 10.10.5 (14F27)
Report Version: 11
Anonymous UUID: 55DA4E51-9DE5-373A-E541-1CCBC93DC116
Sleep/Wake UUID: 4B13906E-CED3-4C5D-830C-840A0B47B13E
Time Awake Since Boot: 2900 seconds
Time Since Wake: 1000 seconds
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Application Specific Information:
Assertion failed: (len != std::string::npos), function load_module, file src/fe_vm.cpp, line 1773.