scrolling thru sound presets and my saved patches no sound

[djraffis]

I am having a problem with Sylenth1 when I go thru my own saved preset sounds I hit my midi keyboard and get no sound from it and on the bottom of Sylenth where the keyboard is shown the keyboard is not being shown as being pressed from midi. I am using Fl Studio 10 and have win7 64 bit. I will have to go forward on the patch list from the right corner of Sylenth1 and then back and sometimes forward again to get my preset to get some sound out of it . I should not have to go thru this to get sound out of this thing. I have the latest version of Syleth1 v2.221. Any suggestions how I can fix this problem.

Thank you,
Dj Raffi S