Add NABU to mame 0278

[Ducdreamer]

Hello Everbody
I have NABU running using de version vrom nabu.ca
But i am using mame 0.278 and would like to add the NABU to this version
I have copied de dirs nadu_kb and nabupc from the version .250 to the roms dir in 0.278
mame gif me an error the file nabukeyboard-90020070-reva-2716.bin not found
but it it sitting in roms\nabu_kb
What am i forgetting

[AGMS]

I have it working in the most recent MAME. I think you just have to rename the nabu_kb directory as nabupc_keyboard.