i use the Mame Official Windows Binary Packages release from: http://mamedev.org/release.html It also have link for source code, and link for a few roms test (just copy/move the downloaded rom in .zip form to roms directory). To clarify per MSFN rule, respective Owner of that roms, gives their explicit permision for MameDev to host their roms images there. i already try the "Disable Custom Heap" option as well any others in KernelEx compatibility settings tabs, none of it solve the Mame problem on RC1 / RC3 release, i got the same result. To replicate the error simply try to run the MAMEPP.EXE Should nothing goes wrong, Mame should give the list of random selection of available roms from roms directory. However with RC1/RC3 i got ta Message saying "Out of Memory!", then exit the Mame. great release but MAME isn't still working...as he said this is a popular Arcade emulator stopped working since RC1....