I don't understand. You can't switch brushes after selecting one of these?Keep in mind that the change in each one from neighbor to neighbor is incredibly subtle, by mere pixels. These are not meant for the fastest work flow. You might want to try the Zipper brush in Mojo Ink instead; it's this entire range but built into one brush.If it's a technical problem, and you literally can't select another brush, then maybe your download of the file was corrupted somehow. Try deleting it and getting it again, maybe. I just can't think of anything else just now.