Texture brush isnt working???

Okay so i just bought my monthly subscription to toon boom and i really like this product, i have since i first used the trial. amazing compared to flash. one of the things i was excited for was the textured brushes for sketching.
But its not working???

ill try drawing and it just wont show up. then 3 seconds later it appears as a normal vector brush line?

My computer can certainly handle this program. my ram isnt an issue. i have the texture on in openGL. I dont know what im doing wrong???
I can use the normal brushes just fine, but the texture brushes just arent working???

Please help!

Which edition of Harmony do you have? Premium? Do you actually see the textured lines in OpenGL or you never see them? Does it happen with any texture you select? Are you using bitmap or vector layers?