I get the same problem here with EZplayer, found Jamstix easy to crash and finally settled on NUsoftingDK drums.
we may have different issues as my pc is about 4 years old and I figured that may be part of the problem as also Albino in its latest version works poorly,Filterscpe causes loads of graphics issues etc etc
Bit of a bummer really, init? Thing is I program my own midi drum notations, and I figuring using EZplayer Free to organize them. Apparently you can use it as a sort of mini-sequencer and have it output midi to, say for instance Battery, which I use for loading samples/drumkits.
Then I came upon a slightly different kind of plugin called Drumstar. But unfortunately, I cannot get that to work either, though I think in this case, its likely to do with me using E-MU audio card; volume shoots to the roof both in Podium and Cubase.