drawing area goes black when drawing

Did my free trial on my desktop and all was good.

Bought for my daughter and installed on her laptop. Install went fine. When trying to draw (i.e. push down left mouse button and move cursor to draw line) the drawing area within the cel goes completely black. Therefore I cannot see what I am drawing.

Can anyone give me ideas on what might be the problem?


Well, it might be a “graphic card display issue”…?
Open Toon Boom Studio Preferences / Display /
and change from OpenGL / Direct 3D / Quartz 2D or vice versa…
Restart Toon Boom Studio…


Thanks so much! Set to Direct 3D and it now works. Now we can get started!