I have used DeSmuME 0.9.4 and it works with many roms. Mind you thay are too slow to be playable on the intel C2D imac I have at the moment. But when I tried the same roms on 0.9.5 the app opened up ok (with a very ugly windoes-esk menu) and I loaded up some roms and they either simply do not work at all or crash the application.
It seems 0.9.5 is a broken release that needs fixing. If you can get the roms working on 0.9.4 stick with that for the time being.
[Version 0.9.5]
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DeSmuME
The8thark reviewed on 10 Jan 2010
It seems 0.9.5 is a broken release that needs fixing. If you can get the roms working on 0.9.4 stick with that for the time being.