Two things that I think might help (although Im still learning!!)
[1] Have you set the MPC and Cubase to the same BPM (otherwise the locate may not match up)
and...
[2] Not sure if this is the problem, but I remember reading this on futureproducers forums:
http://www.futureproducers.com/forums/h ... se-199634/Hey, I use CubaseSX 2.2...you can set Cubase as slave in this version...not positive about Cubase Le, though. The thing is, in Sx 2.2, Cubase can only receive MTC as sync source...Not an issue if you have MPC since it can send either Midi Clock or MTC (MIDI Time Code). Just set MPC as master and send MTC with MMC (MIDI Machine Control). MMC makes sure Cubase responds to you using the locate button on the MPC and whatnot. You will have to select MTC frame rate in MPC, as well.
Set Cubase to slave...using Sync setup option (under Transport mens). Be sure to select the correct MIDI input source for MTC (if you have multiple MIDI ins). You will then have to set the sync to online (under transport menu as well). When you press play or record on Cubase now, it should display something like idle (waiting for MIDI input) ONce you start MPC, it will begin playback/recording...Oh yeah, the first time you hit start on MPC, a dialog box might pop up asking you about the MTC frame rate...Click ok (this will cause Cubase to switch to whatever rate the MPC is set as), I usually just go with 24...Again this is for CubaseSX 2.2, but I'm sure process is similar so you can apply this these instructions...
Might work, might not, hopefully it's of some use!!
