Not sure it's related, but there was another VMU emulator for DS that was released by someone with a different name called 'Segtendo'... Very original.
They still have a page up for it, but the download link is also dead. I managed to find it on a french forum:
But I did'nt find the VMU_BIOS.bin file that the emu required, I've tried with an original VMU bios (VMS BIOS.bin), the emu works but it seems impossible to launch a game, I've renamed my VMS BIOS.bin to VMU_BIOS.bin, I've checked the .ini file and place correctly the VMS directory but I don't know why, it's seems impossible to load a game, I think it comes from my bios file or maybe I've missed something else, I don't know...
If someone know how this emu works, advices are welcome^^