I was testing out a new filter I recently bought, and I liked the result. But I wasn't able to edit some of the Smart Filters, because of the smart filter showing me this (I wonder why, because I haven't done anything much):
Any help? I'm still a bit new to Photoshop as well.
Edit: it has “filter not available or applicable on this document” warning
Edit (2): the version used is Adobe Photoshop Version: 13.0 (13.0 20120315.r.428 2012/03/15:21:00:00) x64
Also, the question asked: what and how to actually adjust the smart filters since despite it's for CS6, it has the warning sign despite I changed color mode from RGB to CMYK, and color channels from 8 bit to 16 bit etc.?
I bought a filter online, and it's hard to be refunded, I liked the results. But I just can't adjust some setting because of the warning sign near the smart filter adjustments (some filter can be adjusted however except invert, bnw, threshold, and levels).
Thanks to anyone who answered.