Hi everyone, I found that the issue is caused by opening a source file directly in Illustrator. In other words, you will not be able to use the brush tool on a file that was opened with illustrator without re-saving it - You would have to save it as an alternate file type (ai, eps, etc) and reopen the file to enable the brush editing function. For example: You have a .png file and you open it with Illustrator, you will not be able to use the brush tool. Now, if you save that file as an .ai file, close, and re-open the file, I will now be able to use the brush tool. Hope this helps. -Cheers!
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