MIDI: MPC2k & ProTools---> HELP

I have ProTools 5.3.1 WinXP, MOTU Fastlane USB (for Triton and MPC2k), and mixer... When I set the MIDI in the MPC2k, notes are only played back when I select the 1A next to [ MIDI: 1A ] and hit open window. I have to leave this window open in order for the notes to be transmitted and received, cuz once it closes, the notes dont play. I have set "Soft Thru" to OFF and ON and messed with every setting, no dice..... And the weird thing is when I leave Soft Thru ON and close the window, the MPC2k will sound the first pad I hit, but the MPC2k input in ProTools maxes out/clips, freezes position at peak level (despite the note has stopped playing) and locks up! I want to hook up MIDI with ProTools/MPC2k to edit my drum grooves, so this is a serious problem for me. I would appreciate any help.

Much Love.....

This sounds really strange. Have you trouble shot this situation to be certain that there isn't a problem with your MPC? Disconnect the MPC from the computer. Connect your Triton to the midi ins and outs of the MPC and try recording and playing back with only the MPC and the Triton.

Get back to us and let us know if the problem persists.

Hope this helps.