I have installed CW Image optimizer and it works perfectly well but only with .jpg files.
I get You are missing: opt-png, opt-gif.
I tried to Skip littleutils check but nothing changes, I get Bad response from optimizer for the files with a .gif and .png extension while .jpgs work like a charm!
I tried also all the Troubleshooting instructions here: http://wordpress.org/extend/plugins/cw-image-optimizer/installation/
Could anybody help me to get the pngs and gifs to work as well?
Thank you in advance.