First of all, i want to cherish Calamity and especially intealls for this great release and the portaudio implementation. This is a huge step forward and IMHO one of the best things in a while in official MAME. It sounds so much better now
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Regarding the nag screens: the devs would not be so picky, if (dumb) people would not have reported so many false bugs at Mametesters.org, without paying attention that they reported already known bugs and ironically the reason was the missing warning screen that would told them, that the game has issues. Please listen to Calamity, when he says "so at least we have a chance to be taken seriously by MAMEdev at some point.". If you are serious into MAME, then take your time and learn how to compile your own version.
It is not that hard, use the Compiler from Headkaze:
http://www.headsoft.com.au/index.php?category=mame&page=mc64If you still have questions, you can ask him (or other nice people) here in the forum:
http://forum.arcadecontrols.com/index.php/topic,71845.0.htmlAlso guys, you should really think about, if its always worth to have the latest MAME version. I update my cab setups only once in a year and sometimes not at all.
I recommend this youtube-channel:
Watch the videos and ask yourself, if its really worth the hassle, to go through downloading new romsets, adding new artwork, extras etc. and updating MAME. Better pay more attention to the really important stuff, that make a difference, like the mentioned portaudio implementation or if you are a LCD user, to any changes of the shader systems HLSL/BGFX or changes to the GUI, like the support of LUA scripts (i.e. no need for patching hiscore diffs) and so on.
Better start playing, instead of always hunting for the latest MAME
, just a advice.