I have a new Intuos tablet which came with Corel Painter Essentials 6. From the beginning, I have been unable to use between 40-60% of the brushes. I am on a Imac and have reinstalled the Wacom driver, reinstalled the painter software, used a test user profile and followed every suggestion of the Corel tech support to no avail. At best, I have occasionally been able to get the problem brushes to work for a few minutes, but then they quit (usually after trying to change the color. Is this a Corel issue or a Wacom issue or both? Any ideas?
A question for you, Maureen--do the brushes paint as expected with the mouse? If the majority of brushes are painting with the mouse, but not with your stylus it will help narrow the problem a bit.
A couple years ago I had an issue with many brushes not painting--turns out the stylus tip wore very quickly and was not transmitting pressure through to the brushes. I replaced the tip and all was well again!