No sound?

Hi. I was using east west stormdrum and some midi does not work. For instance I have a hit in bar 4 and bar 5, the one in bar 4 works but not the one in bar 5. However if I start the track from bar 5 the percussion in bar 5 works.
But if I play the track from bar 4 or the beginning Cubase only plays up the sound from the first percussion in bar 4…

I have no other problems with play (Hollywood Orchestra or symphonic Choirs)