Hey Mumkai !
Thanks for your quick answer !
The MPC is currently working on JJOS 2XL 3.51. I'm sure it's not about the RAM (128MO) cause it's working with the Akai 128 MO CF.
So now when i Put the Ultra 64 GB, i'm able to see the storage and to acess the format menu but when i format it, it takes forever and dont seem to finish. Then I tried to connect the mpc via usb to see if the card is showing up on the computer but its not, where as with the Akai one it's working.
I orderer a Usb CF card reader, so i'll be able to try to format it on the computer, maybe it'll work.
And by following your advices I ordered a Kingston Elite pro 133x 16 GB. I hope this one will works directly
.
http://www.amazon.com/Guang-Kingston-El ... ro+16+133xAlso i was thinking maybe if the Sandisk Extreme doesnt work in the CF reader maybe I could try it with the HDM 10 Kit.
I'll keep in touch to say which ones is working so people don't have the same problem
.