Firstly, when I try to create them via "export custom brush" under file, the "create brush tip" box pops up but I'm unable to edit my file path. However, I'm able to change my file path if I click on my brushes and click on the "brush tip file locations" icon.
Secondly, when I try to use some of my brushes, they won't stamp with one click. They show up only when I drag across the image, making multiple stamps. I've tried resetting to default via the presets icon, but it didn't work.